Glen Johnson has raised a major concern over star this season and has fired a warning to about the defender.
Colwill has not missed a single minute of action for the Blues this term, having established himself in the XI after an impressive loan at Brighton.
Pochettino is a huge fan of the player and it is thought the Argentine boss in the summer transfer window.
The 20-year-old can be deployed as a centre-back or left-back and has played in both roles under Pochettino.
But former Chelsea defender Johnson has urged Pochettino to stop using Colwill as a left-back because he could get ‘found out’ and ‘isolated’ in the position.
‘If you asked Levi Colwill he’d probably tell you he doesn’t want to be playing left-back,’ Johnson told .
‘He’s not the quickest and for me to be a full back you have to have some pace and so he looks like he’s playing out of position.
‘It’s great that the manager trusts him enough to give him minutes but it would be best to play him where he plays best, which is at centre-back.
‘He’s technically good, good at passing it through the lines, and reads the game well but he just needs the right players around him.
‘He could get found out at left-back because he could get isolated out there.’
