Victor Boniface was not called up for this international break this is not unconnected to his present state as you know he is not too fit as he failed a medical in AC Milan even though he made a final minute move to weirder Bremen , I don't think that he is too fit for this crucial world cup qualifiers so the coach did the right thing by not calling him up for this games.
So you actually believe the media that AC Milan decided to abandon the move for Boniface because he is not fit? Personally I don't; I feel it is just an excuse to blow off the deal. If they really wanted him, fitness is something that can be worked on and improved, but I think they had other plans.
Werder Bremen did not hesitate on the deal to get Boniface. Watch the interview.
https://www.youtube.com/watch?v=w8rKa5liEn4You will see that that is a very confident Boniface.
Bayer Leverkusen didn't force AC Milan to buy Victor Boniface from them; AC Milan willingly shown interest to sign Victor Boniface, and they can change their mind if they feel that Victor Boniface wouldn't help them win matches. I believe AC Milan didn't cooked up a false story that Victor Boniface failed his medical so that they wouldn't sign him this season. If AC Milan change their mind not to sign Victor Boniface, don't blame them because it is clear that if a player fails his medical, the club where the player undergoes the medical will automatically pull out from the deal.