Premier League giants Everton wait to raid Southampton for Dusan Tadic, as do Serie A trio Juventus, AC Milan and Roma plus La Liga outfit Valencia.
Everton missed out on Leon Bailey last year when he joined Bundesliga side Bayer Leverkusen for £12.8million.
Everton have been linked with James Maddison of Norwich City in the summer transfer window.
Michael Keane has struggled at Goodison Park since moving to Everton from Premier League rivals Burnley last summer.
Everton have been linked with a move for relegation-threatened Stoke City's star Xherdan Shaqiri.
Championship side Aston Villa have renewed their interest in RC Strasbourg's Stephane Bahoken but Premier League duo Newcastle and Everton want him.
Ademola Lookman left Everton for a loan spell at Bundesliga side RB Leipzig in the January transfer window.
Former Real Madrid striker Mariano Diaz has thrived in Ligue 1 with Lyon and is wanted by Premier League duo Everton and West Ham United.
West Ham United were keen to sign Morgan Schneiderlin from Premier League rivals Everton in the January transfer window.
The Everton striker, currently on loan at Anderlecht, has been out injured since December.