Player inducteed in 2008-2009 season

We are only midway through the season and already 10 new players have been inducted in the side. The latest being Matteo from Greimo and if reports are to be believed then an eleventh one Daniel Agger from Liverpool is on the way. After a below par performance last season these induction were much needed to improve our performance this season. Unfortunatley there is improvement this season but not as much as we expected since we are nine points adrift of league leader Inter.
Therefore I have started this thread for MM members to comment, analyze, discuss, predict and much more on these players. I will start the proccedings with some analysis and questions that I have in mind related to these players.

ARRIVALS IN SUMMER

Ronaldinho: Without doubt he is the best performer among all the new inductees. His arrival and performance has won him the spotlight at Milan and this has proved to be the final nail in the coffin for Kaka as far as his departure is concerned. So it seems Ronaldinho's arrival has come at Kaka's expense something that many feared before Ronldinho's arrival.
Question: Is it wise to have Ronaldinho for Kaka?

Andriy Shevchenko: In simple words he is past his prime and it would be better off to sell him (Or return to Chelsea if he is on loan) then to persist with him especially considering if Kaka departs (Which I desparatley hope not) we will revert back to our old formation of two strikers so we will need a better striker then Sheva behind Borriello and Pato.
Question: Should Sheva be sold?

Phillip Senderos: Personally I rate him a lot higher then how he is being currently rated. Even though he has hardly featured this season due to injuries I still feel his loan move should be turned into a permanent one as he is a perfect solution to our ageging defence and there is no doubt in his talent he has got all the right ingredients for a CB.
Question: If we sign Agger, Gallas or any other CB what would that mean to Sendros's future at Milan. Will he be sent back to Arsenal or kept at Milan?

Other arrivals in the summer transfer window were Christian Abbiati, Matthew Flamini, Viudez, Cardacio.

ARRIVALS IN WINTER

David Beckham: His arrival remindes me of Hernan Crespo because when Crespo was signed by Milan he like Beckham recieved severe criticism. As most people believed he had very little to offer to Milan but when Crespo's loan move ended and he was departing to Chelsea most of the fans wanted the move to turn into a permanent one. I hope this turns out to be the case with Beckham because he can offer us alot more then marketing. First of all he is the only wing midfielder in our side (Taking into account Zambro and Janko as RB and LB respectively) which mean he will give us width in the midfield areas along with his pinpoint crosses and passing. Secondly his playmaking skills (Of pinpoint passing and superb vision) are very similar to Pirlo so he can serve as a good back-up to him and even reduce the burden and workload of Pirlo. So in my opinion he should stay past his loan spell.
Question: Should Beckham's move be made permanent?

Mattioni: I have never seen him play but the fact that Manchester United and most recently Juventus were linked with him shows that he is talented. He is also being termed as the next "Maicon" so he probably plays at RB right?

Thiago Silva: I heard a few weeks ago that he will sign a contract with Milan tomorrow but would join us in june (Because we already have two non-EU players this season). That tomorrow seems to have never come because after that he has completely disappeared from the news. I wonder if he has eventually signed a contract and become a Milan player?