Proudfoot replaces the injured Lee Harrison at tight-head prop with Andy Kelly providing the back-up on the bench. As well as Harrison, Glenn Metcalfe and Joe Beardshaw are also unavailable because of injury. With Scott Lawson rested, Simon Gunn returns to the Glasgow bench. Rory McKay and Andrew Wilson also return to the squad as replacements.
Like Proudfoot, they have not appeared in the squad since November, though all three have been playing in club rugby in the interim. McKay and Wilson have been playing for Aberdeen while Simon Gunn has turned out for Kirkcaldy.
Glasgow: Moffat">Stuart Moffat, Gareth Maclure, Graeme Morrison, Andy Henderson, Sean Lamont, Dan Parks, Graeme Beveridge, Euan Murray, Gordon Bulloch, Matt Proudfoot, Andrew Hall, Nathan Ross, Cameron Mather (captain), Donnie Macfadyen, Jon Petrie
Replacements: Simon Gunn, Andrew Kelly, Rory McKay, Andrew Wilson, Sam Pinder, Calvin Howarth, Rory Kerr
* Saracens Robbie Russell is looking forward to lining up against his international rival, Gordon Bulloch, at Vicarage Road on Sunday. He told the Saracens website: "I've never actually played against Gordon," explained Robbie, "but I know him very well.
"I hope I get the chance to play against him because he's a great player. We get on very well off the pitch, so it would be interesting to see how we match up on the pitch."
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Alan Bulloch and Paul Dearlove are in the GHA squad for Saturday's BT Premiership clash with Ayr at Millbrae (ko 3.00pm).
For anyone unable to get to Vicarage Road on Sunday, the Saracens website will be providing a live webcast of the game - thanks Benfez. You can find out more here.