Munster will have to wait until later this week to find out if their international trio of Conor Murray, Simon Zebo and Peter O’Mahony will be fit for their Pro12 final against Glasgow on Saturday.
The loss of the three would be a body blow to Munster’s hopes of taking the title.
Murray went off after 16 minutes of Munster’s Pro12 play-off win over Ospreys, and there had been fears that he had damaged ligaments in his knee.
Speaking to RTÉ Sport, Foley said that the scrum-half had a scan on the knee on Monday, but had not yet heard the results.
“We’re waiting for it to be read, so he’ll meet with Ray Moran [surgeon], and they’ll go through that,” Foley said.
“So, we’re waiting for good news, and if we can get some good news, hopefully he’ll train with us on Thursday.
"If not, we’ve Duncan Williams, who came on and did really well for us in the game, and then that would probably lead to Cathal Sheridan being promoted up the rank. And we’re very confident in what Cathal can do for us.”
Simon Zebo went off with a head injury against Ospreys, and Foley said he had passed an impact test as part of the return to play protocols.
“He’s started exercise,” Foley said. “Tomorrow that exercise with be upped, and if he doesn’t get any symptoms he’ll train with us on Thursday, and if he can get through that, he’ll be available for selection.”
Captain Peter O’Mahony was taken off with a stiff hip in the semi-final, and did not train on Tuesday, insead getting physio and some rehab work done.
Foley said he would be checked on Thursday, but stressed that such injuries were to be expected at this time of the season, and that O'Mahony was expected to be fit for the game.
“You get to the stage of the year where it’s about getting the bodies out there,” he said.
“All the work is done. We’ve 47 weeks of work done. Missing one or two sessions at the back-end of it doesn’t really matter.”
