Sheffield United Football Club chairman Terry Robinson fears the Football Association's decision to ban captain Chris Morgan for three matches for violent conduct could have repercussions.
Morgan was charged after appearing to punch Robin van Persie in the side of his body during the Blades' 1-0 victory over Arsenal on Saturday.
The 29-year-old centre-back earlier today denied the charge, but a disciplinary commission decided to impose a ban.
An FA statement read: 'Referee Lee Mason confirmed to the FA that he did not see the incident but would have shown Morgan a red card for violent conduct if he had seen it.'
United's plc chairman Kevin McCabe had earlier conceded to being 'furious' Morgan had been charged.
McCabe had hoped common sense would prevail, in particular after the incident last month involving Juan Pablo Angel.
On that occasion the Aston Villa striker blatantly elbowed Morgan in the face, yet no action was taken as the referee at the time had apparently witnessed what unfolded.
Robinson also felt that might have had some bearing, but the FA saw differently, and now United have concerns as to how they will cope without their influential captain.
Morgan misses Saturday's FA Cup third round tie at home to League One Swansea, but more importantly Premiership matches at home to Portsmouth and at Reading.
'Due to the rules, we were unable to be present at the hearing,' said Robinson.
'We submitted a statement from Chris and the club on what we saw was a questionable decision by the compliance unit.
'With separate incidents going unpunished, we thought there was enough evidence to cast doubt about this supposed incident.
'Unfortunately, the commission decided otherwise and subsequently we cannot appeal against the decision.
'Chris Morgan has recently regained his form and position in the team, and this decision could prove serious to our Premiership survival if the manager cannot reorganise or bring in sufficient cover.'