City boss Phil Parkinson confirmed after the Bantams' 4-0 pre-season victory over Guiseley this Wednesday that Ricky Ravenhill is set for a scan on a knee injury picked up during the match.
Ravenhill was forced off twenty-two minutes from the end after being on the received of a late Guiseley tackle.
The injury marred an otherwise pleasing night for Parkinson's men, who secured their fourth pre-season win out of four with victory at Nethermoor.
And while it was impossible for Parkinson to know the full extent of Ravenhill's injury so close after the match, the City chief admitted that things didn't look too promising.
"I don't think it's looking too good (for Ricky)," Parkinson revealed post-match.
"If so then that is obviously a big blow because Ricky is a key player for us.
"I don't think it was a great tackle on Ricky (for the injury). It was a bad tackle and it's disappointing because we've come here in good faith tonight and I don't think some of the tackles were befitting the occasion.
"We all know that football is a physical and competitive sport but I was disappointed with that tackle on Ricky.
"It looks like Ricky will now have to have a scan tomorrow (Thursday) morning.
"I have to admit that from what I'm hearing from our physio (Matt Barras) that this injury does put Ricky in some doubt for the start of the season.
"You never know, he could get up tomorrow morning and feel better but the initial diagnosis for Ricky is that he may have hurt his medial ligament."