Accrington Stanley remain uncertain whether key men Bobby Grant and Michael Symes will sign new contracts.
The duo have been an integral part of Stanley's season, netting 35 goals between them, although the club's play-off hopes are quickly fading following a run of five league games without a win.
But with neither player having yet penned the deal offered to them in January, assistant manager Bell is concerned by the prospect of losing the pair to other clubs.
Bell told the Lancashire Evening Telegraph: "I honestly don't know at the moment if they will sign.
"It would be a concern to lose both but it's happened to us before and we'd just have to get on with it.
"We have just been focusing on trying to get into the play-offs, so we haven't really wanted to be going off on tangents with contracts."