Physically, I'm sure he is but the club has said he isn't mentally match fit; not good for an outfield player, bloody disastrous for a goalie. Even during a one-sided match, a goalie has to maintain 100% concentration for 90 minutes. I think the greatest of all English goalies, Gordon Banks, wrote words to that effect.
I can't claim to have seen Romero play much but he did all right against Spurs and he's played in some big games for Argentina. Give him a chance. Also young Johnstone has a good reputation so we're not too badly off. However, it should have been sorted out after the final home game last season when it was clear that De Gea wanted out.
Tbf I think we tried, but Dave, his agent and United to some extent, probably thought Madrid were desperate to get him. It's turned out to be the opposite and they're quite happy to get him on a free.
Ultimately, Mendes underestimated the situation and/or got played by Perez. He is the one DDG should be pissed off with because he gave him bad advice.
I can imagine it went something like this:
1) Dave always intended to go to Madrid if the opportunity came up
2) Mendes promised him he would make it happen
3) Mendes then goes and discusses this with Perez at some point
4) Perez makes it clear if Dave signs an extension, he will no longer be interested or some such thing
5) Mendes relates this to Dave and assures him that of course the club will sell for whatever they can get - no way would United hold on to you etc etc
6) Mendes underestimates Woodward and here we are...
Simply by trying to be underhanded, and DDG not signing that extension has caused all this problem for everyone. He just needed to be above board and have a gentleman's agreement that should the opportunity come for him to return to Madrid, he'd like the club to honour it. Then Mendes could go and do his wheeling dealing etc.
As it is, they've left the club with no other option than to play it the way they have. The way the club is perceived is very important to Woodward - and he won't want to lose. So DDG is now caught between the Woodward/Perez power struggle and imo all his and Mendes' fault for falling over themselves to make everything as smooth as possible for Madrid.
It's unfortunate, but such is life.