I noticed in preferred formation and the match thread particularly people still aren't fully understanding Allegri's tactics. A lot of people are claiming we 'basically played a 4-2-4' or it was the 4-2-1-3 again with Seedorf in an advanced role. That is not true.
From the beginning of the summer, Allegri had one focal signing he wanted. a "half winger". A LCM/RCM for his 3 man midfield. The obvious choice was Lazzari, the player who played this role so well for Cagliari.
First let me back up and explain what it is I believe Allegri want's out of his half winger. You have to look at rest of his midfield first to understand the concept of it. He has 2 pure CMs who he wants to more or less stay at home. A regista who plays the ball and another CM who can push forward a little more. Both are expected to hold more tactical disapline.
Then there is the trequartista who plays off the strikers and is expected to give the final touch on most occasions. In Allegri's cagliari he had Cossu who was a Right winger playing trequartista.
Now to the half-winger. The concept of this is a player who can play BOTH a 3 man midfield to hold possession and not leave a team defensively vunerable with only 2 CMs (as it's near impossible to play that way anymore) AND a player who can push into final 3rd like an attacking midfielder and add extra body so the trequartista is NOT easily marked out. If you don't understand what I mean by easily marked out, go watch 2009/10 Juventus. Diego is a quality player, but NO ONE from juve's midfield offered creativity, and neither did the strikers. This made defenses job easy... don't allow Diego space and Juve can't do much.
In a sense the 'half-winger' is hardest role to fill for a team as a true winger like nani or van der vaart could never do it as they can't play a 3 man central midfield and a player like De Rossi wouldn't necessarily excell in it either as he's too much of a central midfielder uncomfortable out wide. Players who are probably taylor made for this role are schweinstagger, iniesta, possibly ramires/afellay, a younger camorenesi etc.
Now let's look at cagliari's 2009/10 team last year...
The point that makes it interesting is Cossu was originally a right winger and Lazzari a left winger. Cossu would naturally float to the right and at times it was assume a 4-3-3 look. Because of his penchant of going right, Lazzari had space centrally to run into.
The other interesting point is Cagliari had 3 forwards who were all mobile and versitile. In there two striker system they all had freedom to float side to side in box. SomethinG Pato and Ibrahimovic can do easily. With Nene or Matri (or Jeda) moving to side of box or playing a general 2 striker system, again there was freedom for Lazzari to come in.
All this plus Lazzari's strength/strongerr finishing ability led to him scoring 6 goals as opposed to Cossu who scored only 3 in a more advanced position (granted he had A LOT more assists).
I'm going to show a couple examples of what I mean;
first cagliari v. genoa. Genoa won 3-2
Skip forward to 2:43
As you see, the ball is won when #31 agostini (the LB) and Lazzari (LCM) pressure Genoa and win the ball (I think it's palladino), Lazzari immediately passes it back to Conti who is playing regista (instead of typically Biondini) and Lazzari immediately is making a run from left side up the middle. It insues in a goal after linking up with a clumsy striker, Matri.
now let's look at Lazzari's goal v. Fiorentina:
Goal build up starts @ 0:44
Now look as the CB Canini released the ball, freeze it at 0:49. You'll see Cossu has now floated to Left forward/wing region. Matri is directly central with Jeda at a more Right forward position. Lazzari is about 5 yards behind Cossu at full sprint from left midfield position. As you see Cossu puts a nice touch on it to the surging Lazzari who finishes it beautifully.
THIS goal is similar to the near seedorf miss v. lecce. (Starts @ 1:05)
Defensive error finds seedorf who has surged from midfield found ronaldinho who tees up an open goal which the Seedorf missed. Albiet Seedorf came in more centrally then lazzari but if you rewind the game and watch, seedorf is CLEARLY on left side of central midfield and drifting slowly in. Also Pirlo's ball @ 2:41 which again seedorf didn't finish, clarence starts run FROM the left central midfield get's himself central behind borriello. As terrible as Seedorf's finishing was both build ups were great and on a better day both would have been goals, based on well timed late runs from the 'half-winger' from central midfield into attack.
Truthfully we cannot judge Allegri's idea's for Milan but i'm noticing a pattern from Cagliari and Milan. Even though Cossu played trequartista instead of Left wing like Ronaldinho he floated a lot. Freeze frame both cagliari goals I linked, and you'll see Cossu is in an almost full forward position, be it right or left side, and the opposite side forward shifts a bit wider to accommodate. They take almost a full 4-3-3 look. Whether it's a 4-3-1-2 or 4-3-3 it's a 3 forward system with Cossu getting a free role and the 2 forwards adapting to his positioning. I noticed Ronaldinho did this at times, and at other times stayed glued to left. I think Allegri would like him to play more freely than glued to left, whether he will, is anyones guess but his talent is there.
Finally one last goal which might be more relevant to milan's system. Cagliari played a 4-3-3 in this game. Matri on left, Larivvey central and Jeda on the right.
Goal starts @ 0:28
Truthfully from look of it, it looks more like a 4-3-1-2 with larivvey behind strikers. but what happens. Biondini sends ball to jeda who moves from forward to right side. Again Lazzari is surging from a deep LEFT position to head it in.
Eitherway the dynamic of the system is pretty clear. There are three attacking players who are mobile and moving. And 1 'half winger' floating from the 3 man midfield up to the attack giving that extra attacker to break down teams. Seedorf clearly played this role. HOPEFULLY Boateng can.
It should be stated the other midfielders pushed forward as well when time presented itself but lazzari CLEARLY had more freedom to do so just like Seedorf did v. Lecce. Allegri's system is predicated on spacing and constant movement and continuing runs from deep. However the 'half-winger' role is an interesting wrinkle to standard 4-3-1-2 run in Serie A, and giving it the extra dynamism to play when most teams are shifting away from a 4-3-1-2 and to some variation of a 4-2-3-1. I hope Boateng can take this role and make it his own, but if not, I hope the right player is signed as I doubt Seedorf can do it for a full year and it's final to making Allegri's idea work well