Alan has been in fine form for Glasgow, scoring three tries in the last two matches. He's part of a Glasgow team unchanged from last week's 27-25 win over Ulster.
Dan Parks is back from international duty and Andy Hall is available after suspension, but both will be on the replacements' bench on Saturday.
Dan has been released from the Scotland squad for the Galway game.
"We would like to have considered including Dan in the XV," Hugh Campbell, Glasgow's coach, said this morning. "But he hasn't been with us for a couple of weeks, and he wasn't available for our main session yesterday."
Saturday's match at Galway Sportsground will kick off at 2.30pm.
Glasgow
15 Glenn Metcalfe
14 Rory Kerr
13 Graeme Morrison
12 Alan Bulloch
11 Sean Lamont
10 Calvin Howarth
9 Graeme Beveridge
1 Euan Murray
2 Scott Lawson
3 Andrew Kelly
4 Joe Beardshaw
5 Nathan Ross
6 Paul Dearlove
8 Jon Petrie (captain)
7 Donnie Macfadyen
Substitutes
16 Simon Gunn
17 Lee Harrison
18 Andrew Hall
19 Roland Reid
20 Sam Pinder
21 Dan Parks
22 David Millard