
The Saddlers snapped up former Cardiff City man Tomlin in February, but the 33-year-old has endured a frustrating spell with the club up to yet.
A bout of Covid saw him miss a few games before he pulled up with a groin issue in the recent home loss against Leyton Orient.
Tomlin’s short-term deal expires at the end of the season, and Flynn said with five games to go: “We’re getting him scanned.
“We’ll just have to wait for those results and see where we go and how he is.
“It’s frustrating. We’ll have to have a look at it.”
Tomlin has made one start and four substitute appearances for Walsall.
Flynn added: “He was looking really sharp in the build-up to (Leyton Orient) during that week. His running was good.
“I didn’t sign him to run box-to-box. I signed him for his quality and moments of magic.
“We’ve seen glimpses of that over a short period of time.
“It would be frustrating if it’s until the end of the season, but it’s one of those things and we need to get on with it.”