Portsmouth striker Yengi out for nine to 10 weeks

Kusini Yengi took his goal tally to six goals in his past five starts for Australia as the Socceroos drew in Bahrain

Portsmouth striker Kusini Yengi will be out for between nine and 10 weeks with a knee injury, manager John Mousinho has said.

Yengi suffered posterior cruciate ligament damage during Australia's 2-2 draw in Bahrain in an AFC World Cup Qualifier on 19 November, when the 25-year-old scored the opener and a 96th-minute equaliser.

"It's not good news," Mousinho told BBC Radio Solent, describing losing a player on international duty as "sometimes a bit more frustrating".

"He'd just started three games on the spin for us, went away with Australia, started against Bahrain and scored two goals," he added.

"It felt, to us, like he was hitting a bit of form and coming back in to things nicely. There was going to be really good competition between all the centre-forwards we have in the building."

Former Australian A-League forward Yengi scored 13 goals in 31 games for Pompey last season but has not netted in eight league appearances since their promotion to the Championship.

Mark O'Mahony, who is without a goal in five outings, is also a doubt for their home match with Bristol City on Saturday as the on-loan Brighton & Hove Albion 19-year-old awaits a scan on an oblique strain, but Mousinho may not add to his attacking options when the transfer window re-opens on 1 January.

"We've got Colby Bishop, Elias Sorensen and Christian Saydee, so that's not a priority for us at the moment," he added.