Rowe came off in the first half of Tuesday’s Checkatrade Trophy defeat to Newcastle United under-21s, with his frustration there for all to see after leaving the fray.
On the verdict regarding Rowe, McCann, speaking in his pre-match press conference on Thursday afternoon, said: “It is not good. But we will know more on Tommy tomorrow (Friday) in terms of whether he will make Saturday or be out for a lengthy period of time.
“It is frustrating for Rowey because I think he played his best game against Peterborough (last weekend). We are all frustrated for him.
“We’ll see. But everybody else is good. Ali Crawford has stepped up his rehab and is very close. Danny Amos is also very close and Joe Wright and Danny Andrew are good. Ben Whiteman is good and everybody else is fine.”
McCann’s Rovers side welcome Luton Town on Saturday afternoon, seeking to end a five-match winless streak in all competitions.