Russian powerhouse CSKA Moscow have been dealt a blow as star midfielder Keisuke Honda has picked up a serious knee injury, Uefa.com reports.
The Japan international - who was a transfer window target for Arsenal and Liverpool - sustained the knock in the opening 45 minutes of the 2-2 draw against city rivals Spartak Moscow on Sunday, and was forced to stay behind in the dressing rooms at half-time.
Honda underwent a number a scans earlier this week that have revealed the need for the attacking midfielder to undergo immediate surgery.
The 25-year-old is therefore expected to be absent for two to three months.
The news about Honda will come as yet another blow for CSKA, only days after shot-stopper Igor Akinfeev was ruled out for about six months due to a knee injury.
Honda will not only miss several league games due to the knee problem, but will also miss at least his side's three opening matches of the Champions League group stage against Lille, Inter and Trabzonspor.