Former "Man Utd" striker Dimitar Berbatov insisted that he knows what the "Red Devils" team needs to reach the perfect lineup.
According to the Bulgarian, in January, coach Jose Mourinho must stick to his beliefs and purchase two central defenders.
"In every position, 'Man Utd' has several high-level footballers and everything they need is to strengthen their defense.
Let's hope the team will manage to find one or two players for this position and everything will be fine," - said Berbatov.
"Of course, in January it is difficult to buy a good player, but J. Mourinho needs to find someone in the team who will be interested in doing so," he added.