Ramos reveals Berbatov fears
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.”