Hayes injured a leg during Glasgow’s Celtic League quarter-final against Ulster on Saturday, but has been recovering well during the week.
Glasgow’s team will be named on Saturday, and it is expected to be close to the XV who started against Ulster. However, according to the SRU website one change has definitely been made, with Andrew Wilson starting as open-side flanker in place of Donnie Macfadyen.
Glasgow’s squad: Backs: Michael Bartlett, Graeme Beveridge, Chris Black, Alan Bulloch, Tommy Hayes, Andrew Henderson, Calvin Howarth, Rory Kerr, Glenn Metcalfe, Moffat">Stuart Moffat, Roland Reid and Jon Steel.
Forwards: Cameron Blades, Gordon Bulloch, Ben Daly, Andy Hall, Lee Harrison, David Hilton, Donnie Macfadyen, Rory McKay, Nathan Ross, Jon Petrie, Gordon Simpson and Andrew Wilson.