Frankie Wilson will go into tonight's north-Down derby at Clandeboye Park without his first choice goalkeeper Paul Cairnduff.
The Bangor No.1 will miss the game against Ards (7.45pm) after he was sent-off against Glebe Rangers on Saturday.
Cairnduff could now face a six match ban for an alleged headbutt and that would cost him his place in the Paddy Power Steel & Sons Cup final.
Bangor boss Wilson said: “Paul was very naive. When he motioned towards their player with his head he gave the ref the opportunity to send him off.
“It wasn't violent, it was more bravado than anything, but it was still stupid.
“Paul has been great for us, but now he will miss the derby and he could miss the Steel & Sons Cup final. It was a silly, silly mistake.”
While Bangor explored the possibility of bringing in an emergency signing for tonight's vital Belfast Telegraph Championship 1 tie, but that avenue has proved awkward.
Wilson explained: “It's not as simple nowadays to sign a new goalkeeper, even on an emergency deal, as you need to sign them on a pro contract, so I'm not sure if we will be able to do it in time.
“It's silly that the Championship, which has only amateur or semi-professional players in it, is subject to the same regulations as the likes of Manchester United and Liverpool.
“The transfer window isn't suitable at our level.”
Bangor are likely to go with teenager Dean Justin.
“Dean is only a young fellow who has been doing well for our under-19 team,” said Wilson.
“He is going to get thrown in at the deep end, which will be tough on him, although has played a few first-team games before.”
Johnny Bowers is also suspended as he also got sent-off against Glebe and midfielder Ben Browne is also a doubt.
In the opposite dug out tonight will be one of Wilson's former Bangor team-mates Niall Currie, who took over at Ards in October. Since then Ards have won two and drawn two.
Elsewhere this evening, Newington play Islandmagee at Dixon Park, Ballyclare in the semi-final of the Border Regiment Cup.
Newcastle play Crumlin Star on Saturday at Meadowvale Park in the other semi-final.