Manchester City would be interested in signing Raheem Sterling if he were to become available, according to Sky sources.
Tottenham have completed a deal for Cologne defender Kevin Wimmer and he will join them in June, Sky sources understand.
Dundee United manager Peter Houston says left back Barry Douglas must extend his good run of form to earn a new contract at Tannadice.
Douglas was a star performer in United's 3-3 draw with Kilmarnock on Friday, setting up Jon Daly for a last-gasp equaliser.
The 23-year-old, who joined from the Terrors from Queen's Park two years ago, struggled earlier in the season as he dealt with a family bereavement.
But his display against Kilmarnock has earned him the praise of his manager, who has now challenged him to consistently showcase his qualities.
"Barry was excellent against Kilmarnock. It's great to see him back as he's had a tough start to the season for personal reasons when his uncle died," Houston told the Daily Record.
"But I've always said he's got the capabilities to play in our first team. He hasn't shown it an awful lot as he made mistakes against Kilmarnock earlier in the season.
"But the best way to rectify that is to show what a good player he can be and I thought on Friday he did just that.
"His use of the ball was superb and that's something he also showed against Celtic recently. Now he can hopefully string a run of games together and show the kind of consistency to make me give him a new contract."