Doncaster Rovers are awaiting the results of a scan on the ankle of Anderson after he limped off against Portsmouth.
On the skipper’s injury, Wellens said: "Once he waves that he needs treatment, you know. He's not the type to stay down.
"He's been having injections on the specific area so we'll get him scanned and take it from there."
Meanwhile Bostock suffered a back spasm during the second half of the weekend’s game.
“It’s just a back spasm,” Wellens said.
"He won't play Tuesday because there's no need and I'm probably going to make loads of changes because the team needs freshening up.
"The most important game is next Saturday so we'll make loads of changes.”
We have gathered the best of today’s League One rumours below...
5. Wigan Athletic keen on loan move for Premier League defender
Wigan Athletic are reportedly interested in signing Crystal Palace defender Jaroslaw Jach on loan. Ipswich Town are also keen on his signature. (The Sun)
6. Sunderland set sights on Arsenal youngster
Sunderland are reportedly interested in signing Arsenal right-back Ryan Alebiosu on loan. The youngster signed a professional contract with the Gunners in 2020. (Tom White - Sky Sports)
Photo: Paul Harding
7. Bradford City favourites to sign Doncaster Rovers striker
Bradford City are reportedly favourites to sign Doncaster Rovers forward Omar Bogle. The 28-year-old has been given permission to leave the club after only joining in January. (Football League World)
Photo: George Wood
8. Wycombe Wanderers bid for League Two striker
Bristol Rovers boss Joey Barton has confirmed Wycombe Wanderers have entered the race to sign Brandon Hanlan. Lincoln City have also bid for the striker. (Bristol Post)
Photo: Dan Mullan