West Bromwich Albion are anxiously waiting to learn the seriousness of midfielder Claudio Yacob's latest injury setback.
The Argentina international suffered a shoulder problem during Saturday's 2-2 draw against Aston Villa after a six-week absence with a hamstring injury.
Albion head coach Steve Clarke said: "Claudio has damaged his shoulder. We are not sure how serious it will be, so it's fingers crossed.
"It's a blow to him after just coming back from injury but we have got 10 days to the next game against Everton (on January 30).
"He was doing the job great for us as a defensive midfielder until he got injured and we have missed him a little bit."