I like the guy, he brings something we don't have. £65m is way too much. It wouldn't cost too much more for Martinez, £55m is more than a fair amount IMO.
What he needs to do is put together his last 2 seasons. He had 11 goals and 3 assists in 21/22 and 6 goals and 9 assists in the season before. Now if he can get going in both areas then that would get him closer to being a £65m player.
He is only 25 and is at least grounded in this league. It would kill the Moura debate once and for all.