Everton target Kieran Tierney has a question mark over whether he could cope in the Premier League, if a move south of the border is sealed, former Celtic star Scott McDonald says.
The Celtic full-back, who has a contract with the Hoops running until 2023, has been heavily linked with a move to the Premier League this summer with Everton mooted to be leading the chase.
McDonald believes that the pace and physicality of the Premier League is much higher than the Scottish Premiership, and it would be a tough test for Tierney should he move to England.
But at the same time, McDonald is of the opinion that Tierney would be more than willing to rise to that test and meet the question mark head on.
McDonald, questioned on the Everton speculation, told BBC Sportsound: "Celtic as a football club, I don't think they'll want to lose him but it certainly tests their resolve – if £25m is slapped on to the table, that's a hard amount to say 'no' to and then I think pretty much it'll be in the player's hands.
"People are going to go mad when I say there's still a question mark on Kieran Tierney, especially at that level.
"The physicality and the pace of the game down there is completely night and day from what you get week in, week out here.
"I think he's more than willing, more than capable, to go and rise to that test. It's not so much him, it's what he's up against.
"It's the bigger physical specimen that he's going to come up against."
Tierney has been in no hurry to move away from Celtic in recent years, but a big money bid from Everton could cause the defender to think twice.
