This means that Pompey will have to do without their best striker for the upcoming games against AC Milan, Blackburn, Wolfsburg, West Brom, Newcastle, Bolton and maybe more.
It's a huge blow for Tony Adams who must now rely on the unreliable John Utaka or David Nugent who is still yet to score in the Premier League. It's now time for Pompey's £14 million duo to step up and prove to the manager and the fans that they are worthy of playing for Portsmouth FC.
The dilemma doesn't stop there as the genius that is Harry Redknapp didn't pick Nugent for Pompey's UEFA Cup squad, leaving the team desperately short on strikers now that one is injured.
But Dave can still play in league games but the monkey on his back regarding not scoring in the top flight has now grown into one giant, hairy ape and there's only so much running around you can do before the fans get impatient.
Who knows? Maybe he will come good in Pompey's hour of need. The same can't be said for John Utaka who is still his usual, frustrating self and the fans are reaching breaking point with the Nigerian.
The most frustrating thing about Utaka is that you can clearly see that he has the pace and ability to scare the life out of any defence in the league if he applied himself and kept his concentration levels at a maximum. He also seems lazy and there's nothing that annoys Pompey fans more than a player who doesn't give 100% on the pitch.
Still, there is no better opportunity for him to change the opinion of all of the Pompey fans this Thursday against AC Milan. That goes for Papa Bouba Diop too who isn't exactly everyone's favourite player right now.
Get well soon Jermain, I have a feeling we're going to miss you!