CSKA Moscow coach Juande Ramos has told his players to beware Manchester United striker Dimitar Berbatov at the Luzhniki Stadium on Wednesday evening.
Sir Alex Ferguson's side head to Russia without five first-team regulars, with Wayne Rooney, Ryan Giggs, Patrice Evra, Darren Fletcher and Park Ji-Sung all absent for the Red Devils as they bid to maintain their 100 percent start in Group B.
However, former Sevilla and Tottenham Hotspur boss Ramos - who worked with Berbatov during his short stint at White Hart Lane - has warned his side that the Bulgarian will be 'absolutely unstoppable' if he turns up with his A-game.
“I worked with him at Tottenham, he is a great player,” he said.
“I can't say how he has adapted to Manchester United but when he is in good form he is absolutely unstoppable.”