That's exciting news for AC Milan fans, and the addition of Walker will make AC Milan defense even stronger. In the Premier League, Walker movement has been seen to slow down, in my opinion his decision to move to Serie A was very appropriate. It seems that there are many factors that make Walker reluctant to move to the Saudi Pro League, maybe Walker still wants to strengthen the England National Team, staying in Europe can maintain his level of play.
AC Milan faced many obstacles in recruiting Rahsford, especially regarding the player salary which was considered too high, and AC Milan was unable to make his status permanent after the loan period was over. With Serie A regulations limiting the number of English players recruited, AC Milan management chose Walker as an alternative solution. It seems that Walker did not need long to adapt, now AC Milan has the leader they need.
Of course this is good news because AC milan really needs better improvement to improve their performance in Serie A. Walker will be a good defensive fortress for the second half of this season and this is a good job that has been done by ac milan management.
AC milan also has to change their style of play for the second half of the season, because if you look at their strategy it is easier for opponents to read when they are busy attacking but their defense is not balanced so that must be a concern for Conceicao.
On the other hand, ac milan performance in the Champions League this season has been so good, They have managed to improve their position in the standing. I think they also have to do this in Serie A because to penetrate the top 4 is still quite big for them to do because there are still many matches left.