The Sunderland manager wants to add pace and a goal threat to his side for next season.
Brendan Rodgers was appointed as the new Celtic manager last month.
Windass is preparing for his first season as part of Mark Warburton's Glasgow Rangers side.
West Ham United signed Sofiane Feghouli from Valencia this summer.
Middlesbrough are reportedly keen on Derby star Jeff Hendrick.
The Gunners boss has been suggested as the potential next England manager.
France take on Iceland and players linked with Manchester United, Leicester and Tottenham are in action
Tottenham reportedly want a deal starting at £5m for DeAndre Yedlin.
Everton, Bournemouth and Middlesbrough have been linked with Crystal Palace man Wayne Hennessey.
The winger completed a move to Crystal Palace on Friday.
West Ham United failed to win against Sunderland in the Premier League on Saturday.
Leeds United defender Pontus Jansson has been linked with a move to Southampton in the summer transfer window.
Southampton are reportedly keen on Liverpool defender Mamadou Sakho.
Real Madrid are reportedly willing to sell James Rodriguez to Manchester United. Arsenal target Sead Kolasinac will decide his future by next week.
Tottenham Hotspur have again been linked with Bruma - but Galatasaray are denying that a deal has been agreed.
Chelsea’s defeat to Manchester United seems to have given Tottenham Hotspur hope in the Premier League title race.
Brendan Rodgers' Celtic side are expected to be active in the summer transfer window.
Manchester United have been linked to Arsenal star.
Pedro Caixinha worked with Simao Mate at Panathinaikos - and they took on Rangers together in 2008.
Manchester United won against Chelsea in the Premier League at the weekend.
At the end of the match Antoine Griezmann was handed a folded-up piece of paper and instructed not to open it until he got home.
For those who knew Gareth Bale when he was a 16-year-old at Southampton, living with his fellow scholars in the club’s digs at Darwin Lodge, he was a wind-up merchant, always smiling, one of the boys. It is a side to him that has been camouflaged. Bale’s public persona has long been synonymous with playing it straight and keeping his feelings under wraps. Until now.
Briefly, Germany toyed with our minds.