If we loose DDG and Martial, and that too for free, we are in deep trouble. We have enough holes to fill in our squad and loosing those two would make things absolutely worse.
A new WC keeper and a new top class LW would cost 150-200 million. Add to that the need for CB, RB, DM, RW and that's a lot of money.
Hopefully we have already agreed on some kind of deal with those two, especially with Mou gone. Also if those two were to leave in the summer, we would be hearing stuff about other clubs being interested or in talks with them,but there are no reports stating so.
Here's hoping