Wrexham player-manager Andy Morrell has said he is disappointed with striker Danny Wright following his sending off against Barrow.
Wright had scored Wrexham's opener in their 2-0 win over Barrow in the Blue Square Bet Premier.
But the former Cambridge player was shown the red card with 20 minutes remaining for stamping on Danny Hone.
"I'm just disappointed because I need him," said Morrell.
It was the second time this season Wright had been sent off against Barrow having been dismissed during the defeat at Holker Street in September.
The 27-year-old recently returned to Wrexham's first team after dislocating an elbow against Brighton in the FA Cup.
His opener against Barrow was his second goal in as many games for Wrexham after he scored in the midweek win over Luton.
"I said on the bench when he scored it would be good if he went on a little run and got a few goals in a few games," said Morrell. "But he's put paid to that.
"That's probably four games [he'll miss] and we need everybody pulling in the same direction and we're going to miss him.
"I'll have a look and I'll see. A few of the lads said he stamped on the lad. Dan said it wasn't meant but he's just underneath him
"I told him at half-time not to get involved because there were a few in the first half that he could have done and he's gone and done that.
"I wish he'd learnt because he's done it against them up there and he obviously hasn't."
Wright's dismissal marred Wrexham's victory, which keeps up the pressure on Blue Square Bet Premier leaders Fleetwood.
The Dragons, five points behind Fleetwood but with a game in hand, travel to Ebbsfleet on Tuesday night.