"Obviously Rangers are a massive club and I'm sure Andy would be interested if they made an approach," Harrison said.
"He has one year left on his contract and wants to know what the future holds and if Rovers manager (Mark Hughes) sees him in his long-term plans.
"At the moment Andy is a Blackburn player," he added.
"He has forced his way back into the team following injury and suspension. I am unaware of any approach from Rangers."