Newcastle head coach Steve Bruce thinks it would be a "gamble" for Scotland to take winger Ryan Fraser to Euro 2020.
Fraser, 27, has not played since scoring in back-to-back internationals in late March.
"It has been a difficult time for him. He does desperately need a pre-season, pre-season is huge for him," said Bruce.
"Whether he's going to be picked in the Scotland squad, I would think that would be a gamble too since he's missed the last six, seven weeks playing no real football or training.
"With the problems Scotland have got and 26 players, I don't know, but it's certainly a gamble.