Worcester head coach Richard Hill says he will not sign a back-row replacement after new signing Ezra Taylor was ruled out with a knee injury.
Taylor lasted less than two minutes of his debut against Wasps, and could be out for the rest of the season.
Hill told BBC Hereford and Worcester: "I don't want to go into the market. As you saw that didn't work out for us.
"The jinx has continued. I don't know what is causing it and we are bitterly disappointed for him. "
The Samoa international was brought in just over two weeks ago to alleviate a critical shortage of fit ball-carrying loose forwards in the Warriors ranks.
"We've got Adam Balding, Kai Horstmann and Neil Best all out at the moment, so we'll have to hurry them up a little bit," Hill continued.
"Hopefully, one of those will be fit soon, but unfortunately none of them will be available for the Gloucester game on Saturday.
"After that, we've got a four-week break until our next league game, so we should be able to get one or two of them back fit by then."
Hill was left cursing his luck after the win over Wasps as Taylor's injury means he must go back to the drawing board for the make-up of his pack.
"I'm going to be talking to our medical staff to make sure one of our other injured back-rowers is fit again pretty soon. "
Warriors look set to revert to having former England intentional Chris Jones moving from the second row into the number eight shirt for the Gloucester game.
"We moved Matt Kvesic to number eight at Wasps," said Hill. "But he isn't really an eight - he's a seven or possibly a six.
"We could have moved Chris Jones back there and brought Ben Gulliver on, but it was a bit early to change our second row combination."