Long-serving second-rower Deacon has recovered from hamstring and shoulder injuries to join the squad for the opening home game in this season’s European competition.
Director of rugby Richard Cockerill retains an unchanged starting line-up, with Deacon coming on to the replacements’ bench.
The teams will have more than senior international players on duty in Sunday's match, promising another top-class occasion at Welford Road.
After starting the season with just one defeat in the opening six rounds of Aviva Premiership action, Tigers go into Sunday’s game looking for their first points in Pool 2 of the Heineken Cup after an opening-round defeat in Toulouse.
Tickets for Sunday’s match are available now from the Tigers ticket office. Phone 0844 856 1880, call in at Welford Road (open until 5pm Friday, 9am-5pm Saturday and from 9am on Sunday). Or book online at www.leicestertigers.com and collect your tickets on the way into the game.
Leicester Tigers (vs Ospreys, Welford Road, Sunday 3pm)
15 Scott Hamilton
14 Niall Morris
13 Manusamoa Tuilagi
12 Anthony Allen
11 Vereniki Goneva
10 Toby Flood
9 Ben Youngs
1 Logovi’i Mulipola
2 Tom Youngs
3 Dan Cole
4 Graham Kitchener
5 Geoff Parling
6 Steve Mafi
7 Thomas Waldrom
8 Jordan Crane (c)
Replacements
16 George Chuter
17 Marcos Ayerza
18 Martin Castrogiovanni
19 Louis Deacon
20 Richard Thorpe
21 Sam Harrison
22 George Ford
23 Matt Smith
Ospreys
15 Richard Fussell
14 Hanno Dirksen
13 Andrew Bishop
12 Ashley Beck
11 Eli Walker
10 Dan Biggar
9 Kahn Fotuali'i
1 Ryan Bevington
2 Richard Hibbard
3 Adam Jones
4 Alun Wyn Jones (c)
5 Ian Evans
6 Ryan Jones
7 Justin Tipuric
8 Jonathan Thomas
Replacements
16 Matthew Dwyer
17 Duncan Jones
18 Aaron Jarvis
19 George Stowers
20 Joe Bearman
21 Rhys Webb
22 Matthew Morgan
23 Tom Isaacs
