If West Ham use him correctly, he will stand out again because he has a few world class attributes and is still probably the best 1 vs 1 duellist FB in the game. He should be maturing and rounding out his whole game during this period of his career, too, so it’s not infeasible that he looks like a player big clubs will go back in for in a couple of years. The difference now, however, is he’d have 5yrs to go at that point as opposed to 3, and putting in an offer for him will be exceedingly difficult for an interested party.
He’s 26, by 28, injuries permitting, he’s likely to be a better, wiser player with an age profile that’s still OK, but that’s all redundant now, with 7yrs on the table. Guy has snookered himself, if he has the performance level I suspect he will there.