Derby County manager Paul Jewell says a lack of effort and not a lack of ability is the reason why Rob Earnshaw has flopped at Pride Park.
Earnshaw has only started three games for the Rams (Getty Images)
Earnshaw was signed by Billy Davies for a record fee of £3.5m in the summer.
But the 26-year-old Welsh international striker has started just three matches - only two in the Premier League.
"Rob has to look at himself and ask why he's not in the team. It's not just me, he wasn't in the team with Billy either," Jewell told BBC Radio Derby.
Robert Earnshaw needs to ask more from himself
"Robert Earnshaw has got a lot of ability but I think he needs to look at himself and start putting a bit more of a shift in because he should be knocking on the door to get in the team.
"Robert Earnshaw's played at West Brom, Norwich and Derby so he has all the attributes but I think, and I've said this to him, he needs to ask more from himself."