Bolton flew out to Lisbon on Wednesday for the second leg of their UEFA Cup last-16 tie against Sporting without 12 first-team players.
Jussi Jaaskelainen and captain Kevin Nolan both missed last week's 1-1 first-leg draw with back injuries, and so did not travel.
The duo were joined by Kevin Davies, Matt Taylor, Andy O'Brien, Ivan Campo, El Hadji Diouf and Ricardo Gardner, as Trotters manager Gary Megson's priority is Sunday's Premier League clash at Wigan.
Also unavailable are Gavin McCann through suspension, while Tamir Cohen, Grzegorz Rasiak and Gretar Steinsson are ineligible.
Bolton squad: Al Habsi, Hunt, Samuel, Meite, Giannakopoulos, Helguson, Teymourian, Vaz Te, J O'Brien, Braaten, Harsanyi, Cahill, Sinclair, Guthrie, Cassidy, Sissons, Woolfe, Walker.