After the recent events I have a hard time believing anyone would let Khedira go...
with incoming Toni Kroos to Madrid, i can see them letting Khdeira go, he is quite an injury prone player which Arsenal love, but this has been reported for a while and Khdeira has refused to sign a new contract at the Bernebau and only has 1 year left, so i think Madrid want to sell than rather let him leave on a free next season.
Same kinda situation Arsenal had with RVP.