that sucks man, big time, he looks pretty unreal. always annoys me when you finally find someone who looks amazing and then you realise he's just be signed and you missed out on him. keep tabs on him tho, and every couple of months do a scout report on him and reveal in the press you think he'll be a star player and because he's young, you could get yourself in his favoured personnel. then, if he ever does want to leave, or you get a bid accepted by his club, he'll be more likely to push for a move and choose your club.
that GK looks like he could be a star mate, i'd try and get him in if he's not too expensive. i dont normally go for regen goalkeepers too much, i prefer to pay more money for older experienced keepers, but if you can get him for quite cheap he'd be a good gamble and you can develope him and hope he becomes a worldbeater.
i found this guy as soon as he started the game aged 18 and had to activate his release clause of £9.5 million to get him, it was totally worth it tho, take a look now he's 21.