Hope he gets well soon and everything goes great in his life. This season was probably his best ever at Barca, he was crucial with some nice saves throughout the season and it will be a pity for Barca not to have him until the end of the season. As for the national team, I doubt Del Bosque would bench his favorite son Iker, but he could have a chance why not. De Gea has been poor this season in Utd and I don't reckon any Spanish keeper to do well lately in La Liga. Spain has many GK options but this season doesn't seem to be the one for the Spanish goalies. What I feel more sorry for Victor is now the Man City move could get messed up and cancelled, no one wants an injured goalkeeper. Also the comeback is going to be quite tough for him, as for all the others with knee issues, since 6 months is quite a lot.
By the way, it is an interesting yet sad fact that many of players lately are tearing their ACL ligament or having long-time injuries involving the knee. I could name Falcao, Cristoforo of Sevilla (key player lately) and now Valdes. I'm sure I heard of other similar injuries this season also, it is becoming a kind of trend, unfortunately.
Get well soon Valdes !