The Tottenham Hotspur defender saw England crash out of the tournament this week.
Lewis Cook trained with Leeds United's first team yesterday.
Kyle Lafferty left Ibrox side Glasgow Rangers back in 2012, but his career has failed to take off since then.
The 24-year-old joined Liverpool for £30 million today.
The Argentine international spent last season out on loan at Getafe.
Tottenham are reportedly set to win the race for Marseille striker Michy Batshuayi.
The American goalkeeper left Everton for a return to MLS this summer.
Ex-Manchester City boss Manuel Pellegrini was linked with the vacant Southampton job.
Sunderland boss Sam Allardyce and West Ham United's Slaven Bilic have both been tipped as potential successors for Roy Hodgson as England boss.
Rangers appear to have taken a former international defender on trial.