Sterling ended his career very early to be honest. He had his golden age at Manchester City. Later on he was like average at Chelsea and still not that bad. But signing for Arsenal was a big mistake for him.

Gyökeres is still looking for a team. He has made up his mind about leaving Sporting. He is hoping an offer from the Premier League as far as I can see. Liverpool rejected him. Manchester United might be his next team unless Arsenal makes a bigger offer.
If he turns out to be a second Nunez case then I wouldn't have anything to say about it.