The Welsh winger signed for Schalke from Manchester City for a £11million fee two years ago, and went on to make 30 Bundesliga appearances for the Royal Blues.
The 20-year-old winger has joined
on loan for the remainder of the season.
told the club’s official website:
“I’m delighted to sign for Stoke City until the end of the season and am looking forward to it.
“I’ve come here to help the lads in every possible way I can. As an attacking player, hopefully I can add some goals and assists to try and help the team make the promotion spots.”