Portsmouth boss John Mousinho has been dealt another major injury blow ahead of this weekend’s tussle with Sheffield United.

Portsmouth have been rocked by the loss of winger Keshi Anderson to a hamstring injury ahead of Saturday’s Championship clash with Sheffield United at Fratton Park.

The former Blackpool man joined Pompey on a one-and-a-half-year deal during the January transfer window after being released by Championship counterparts Birmingham City.

After making two cameo appearances from the bench prior to the end of the January window, Anderson, 30, was absent for last Saturday’s 1-0 defeat to Preston North End at Deepdale, marking another blow Pompey head coach John Mousinho could have done without.

MORE: Sheffield United's next six fixtures compared with Championship rivals as play-off race intensifies

The 2008 FA Cup winners have been hampered by injury issues in recent weeks, particularly in the wide areas, meaning confirmation that Anderson could be out for up to two months is the latest blow Mousinho is having to deal with.

“Keshi is going to be out for six to eight weeks with a hamstring issue,” Mousinho told BBC Radio Solent, previewing this weekend’s clash with the Blades. “The reason we brought three wingers in in January was because of the injury issues that we had.

“If we are looking at the time, we lost [Yang] Min-hyeok, who had to go back to Spurs and then go to Coventry. Josh Murphy had been out for a significant period. We lost Franco [Umeh] and Harvey [Blair] in the same game.

Mousinho dealing with more injury concerns

“That left us, I thought, incredibly short so we finished the Arsenal game with no wingers. I was pretty vocal about the state of play after the Sheffield Wednesday game where, again, we finished the game with no wingers.”

Elsewhere, Mousinho has played down the likelihood of striker Colby Bishop playing any part against Chris Wilder’s team on Saturday afternoon. He missed last weekend’s trip to Preston, being ruled out because of an ankle issue, but Mousinho initially hinted he could return this weekend, admitting he was “hopeful”.

MORE: The Sheffield United unit creating a buzz at Bramall Lane

However, he has now toned-down the striker’s chances of being involved.

“Colby is 50-50,” Mousinho added. “We are probably going to err on the side of a no at the weekend.

“If it is a no, we will look to try and get him ready for Charlton.”