Birmingham striker Mikael Forssell will be out of action for up to three months after undergoing knee surgery.
The former Chelsea player broke down in training over the weekend and after having a scan it was decided an operation was the best option for the Finland international.
The only consolation for Forssell is it is not the left knee on which he underwent major surgery to rescue his career just over two years ago.
Blues manager Steve Bruce said: 'Mikael has been feeling some discomfort in the knee for a while and, after a scan, it was decided it needed to be washed out.
'He's got a bit of cartilage damage in there that needed to be repaired. It's Mikael's `other' knee and not the one that kept him out of action for eight months.
'It's a shame for him and us that he will be missing for between eight to 12 weeks.'
Forssell has been dogged by knee problems since scoring 19 goals when on loan to City from Stamford Bridge during the 2003-2004 season when they finished 10th in the Premiership.
He signed for a second loan season with Birmingham but had to go under the knife in September 2004 after returning to Chelsea and only made a comeback at the end of that campaign.
Bruce splashed out £3million to secure Forssell on a permanent basis in the summer of 2005 but he could only play a bit-part in their vain fight against relegation.
Forssell had been expected to play a key role in Blues' attempt top regain top flight status but instead has slipped down the pecking order behind Nicklas Bendtner, Gary McSheffrey, Cameron Jerome and DJ Campbell.
His latest problems began when he jarred his knee after coming on as a substitute at Luton in mid-October.
Forssell had been pencilled in to play in Monday's reserve game against Nottingham Forest after rest and rehabilitation but his training setback led to the latest operation and he could be out of action until February.