David Holdsworth has warned his Lincoln City squad they are playing for their futures and vowed to shelve contract talks until results improve.
The Lincoln boss is still seething at Tuesday night's 4-2 defeat at Southport where his side produced one of the worst defensive displays of the season.
City were 3-0 down inside 32 minutes in a poor performance which prompted a furious Holdsworth to send out his players early for the second half.
The City boss then hauled his side in for training yesterday as punishment rather than give the players the day off.
And he has told his squad, the majority of which are out of contract in the summer, that they can forget talk about new deals for now.
"If the players are expecting me to talk to the chairman on their behalf about a new deal, then I need better than what they gave me against Southport," he said.
"That performance was not good enough and I would not be making any recommendations based on the characteristics I saw on Tuesday night.
"If you were a scout in the stands you would have looked at our team and not ticked any boxes because, defensively, we were not good enough.
"If anybody expects to be rewarded then, sorry, they are barking up the wrong tree.
"I won't be happy until I see stronger attitude in terms of putting your head on the ball.
"I will not lose faith in the players, but we need consistency from them."
Having blown his top at Tuesday's disappointing display, the City boss was set to shore up his defence with another centre-back.
This week he signed Chris Bush on a month's loan from Gateshead, a defender who can play left-back.
But a knee injury to Scott Garner has left Lincoln short of central defenders and he hopes to make another addition before Saturday's home clash with Newport.
"I need another defender because losing Scott Garner was a huge blow," he said.
"Peter Gilbert is still not fit and Paul Robson has been playing out of position.
"He is not a natural left-back which is why I brought Chris in.
"When you bring in players you have to bring them in for the right reasons.
"We cannot bring players in for the sake of it."
Holdsworth, meanwhile, was set to address Lincoln City Supporters' Trust members tonight at a question and answer forum at Sincil Bank.
Several players will also be on hand to answer questions.
The event begins in the Trust Suite at 8.15pm.