So long Massimiliano Allegri 

I definitely feel bad for him...He took over a team of stars in the 2010-11 season and went on to win the title and coach of the year award.  
his lineup:  

(minus Pirlo becuase he was injured much of the year.  Cassano joined in January to start over Robinho)
Look at the current roster to see how the club gave him no help...especially defensively.  Last year was a miracle that he manged to qualify for CL...credit mostly to El Sha and Balo i guess.
This season there were long term injuries to Abate, De Sciglio, El Shaarawy, De Jong, Birsa... I think he's done all he could under such circumstances.
Milan actually have a bunch of good players if they could all get healthy.  A solid squad rotation was never developed but add a center back with class and Seedorf will have a fine team to work with