Tottenham fan Chris Cowlin "just can't see this working" with Thomas Frank, but former goalkeeper Paul Robinson feels he needs more time as "a good manager will reap the rewards eventually".
The Spurs head coach is under heavy scrutiny after a poor run of form, particularly at home, has left his side 14th in the Premier League table and out of both domestic cups.
Frank, who only replaced Ange Postecoglou in the summer, has been booed from the stands and taunted by the club's own supporters over recent weeks.
"I feel like a large majority of the fans have given up on Thomas Frank," Cowlin told BBC Radio 5 Live Breakfast.
"We've heard 'you're getting sacked in the morning' before the final whistle against West Ham on Saturday, then ‘boring, boring Tottenham’ away at Brentford, and boos for the manager and the team throughout the campaign so far.
"I feel like this season has been a bit of a disaster. The club are trying to stick with him, they want this to be a long-term plan, they want this be a long-term manager at the club, but sadly I just can't see this working.
"I'm not putting this all on Thomas Frank. We should have done a lot more in the transfer window to back him.
"But when you lose the fans, particularly the away fans, I'm not sure how a manager can come back from this."
Reports earlier this week suggested the club were considering sacking the ex-Brentford boss, however, in his news conference on Monday, Frank insisted he had a “feeling of trust” from the board.
"We live in a world now where you lose three or four games and the manager is put immediately in the spotlight and the scrutiny turns on to him and his job," Robinson said.
"Whereas actually, I've always said the greatest gift you can give any manager or coach is time, because a good manager will reap the rewards eventually.
"His managerial career at Tottenham is still very much in its infancy and I think we are guilty of reacting very quickly. You forget this team finished bottom of the rest last season without getting relegated.
"Yes, they are currently the Europa League champions, but how poor they were last season, then I think this season is an addition to where they finished last. It is going to take time to improve a squad that was not good enough to compete at both levels."
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