Worcester captain Pat Sanderson could face another six weeks on the sidelines as he battles to recover from a leg injury.
The former England captain missed Worcester's opening two Guinness Premiership matches against Northampton and Wasps, and it has now emerged he might not play again until late October.
New Zealander Greg Rawlinson has taken over leadership duties in Sanderson's absence, and is set to continue when unbeaten Leicester visit Sixways on Saturday.
Warriors rugby director Mike Ruddock, meanwhile, has confirmed Marcel Garvey is out for six weeks due to hip trouble, while Garvey's fellow wing Rico Gear is nursing an Achilles problem that means he is an absentee for Tigers' visit.
Ruddock though, is likely to make only a solitary change from the side that pipped Premiership champions Wasps 11-10 last Sunday.
Fly-half Loki Crichton, whose injury-time penalty gave Worcester the win at Adams Park, is a confirmed starter instead of Welshman Matthew Jones.
Ruddock said: "Matthew Jones has had a few problems with an abductor at the top of his leg.
"It happened last minute, and was a bit sore in last Sunday's warm-up.
"We let him carry on and play, and he did well overall, but he was struggling with his kicking game and pulled up a little bit sore this week.
"The medics tell me they will get him right for Saturday, but on the basis of that, Loki is going to start and Matthew is then an option for us off the bench."Reuse content