David Moyes has told PLZ Soccer that he doesn't think Celtic's squad is good enough for their aims, and they need to either splash the cash or improve their commitment.
Moyes, 52, is out of work having left Real Sociedad in November, with his managerial career really nosediving since leaving Everton for Manchester United in 2013.
The Scot was appointed as Sir Alex Ferguson's replacement at Old Trafford, but lasted less than a year in the job before being sacked, and he was in charge of Real Sociedad for one day short of a year having struggled in Spain.
Moyes will be expected to return to management this summer, and there have been plenty of questions about whether he could return to former club Celtic in order to replace their struggling boss Ronny Deila.
Deila saw his Celtic side crash out of both the Champions League and the Europa League before 2015 was even over, and after a Scottish League Cup defeat to Ross County in January, many Bhoys fans have turned against the Norwegian manager.
Now though, Moyes has suggested to PLZ Soccer that Celtic's squad simply isn't good enough for what they want to achieve both in Scotland and in Europe, with the ultimate aim right now to return to the Champions League group stage, something they have yet to achieve since Deila's arrival in 2014.
Moyes' brutally honest verdict has some truth to it, and he then suggested that Celtic either need to invest major funds in new and improved players, or focus on great recruitment to find bargains that can actually improve the Celtic squad.
"I’m saying this with total respect, but I don’t think the Celtic squad is good enough to reach the levels they want. That’s a no-brainer if you ask me," said Moyes. "You can talk about the quality of managers, but you must have the players to get you to that level.
"And if you’ve not got them you have to go and buy them, or go out and source them with really good recruitment. I think that is the key to getting a really good side," he added.
Do you agree with Moyes analysis of the Celtic squad?