We don't get that money from the Champions League unless we were to win the qualifier, the second leg of which isn't until August, and i don't think Martinez would stall getting his targets until then. After that we'd just be buying more players for the sake of it.
I'd rather we spend the amount owed from player sales, £25m or so, but get in top quality players and use any other money to fund top quality wages.
I don't see us needing as many players as some seem to think, to be honest. We are, in my opinion, three top quality permanent signings away from a very good squad.