Bolton captain Kevin Nolan is a major doubt ahead of Thursday night's UEFA Cup last-16 clash with Sporting Lisbon at the Reebok Stadium.
Nolan sustained a back injury in the 3-1 home defeat to Liverpool on Sunday, with manager Gary Megson describing the midfielder as "touch and go."
Megson is without four players for the first-leg tie with El-Hadji Diouf suspended, along with the ineligible Grzegorz Raziak, Gretar Steinsson and Tamir Cohen.
Bolton squad: Jaaskelainen, Samuel, Nolan, Meite, Stelios, Campo, Helguson, Gardner, Davies, Teymourian, Vaz Te, J O'Brien, Al Habsi, A O'Brien, Cahill, Taylor, Alonso, Guthrie.