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Chelsea have been linked with a number of players this month including Nathan Ake, Jadon Sancho, Moussa Dembele and Wilfried Zaha.
According to Don Hutchison, Chelsea boss Frank Lampard might need to sell up to four players to make room for new signings this January.
“I think he’s got a very, very good squad,” Hutchison told Premier League Productions.
“People talk about the youngsters, you’ve still got people like N’Golo Kante, you’ve still got [Antonio] Rudiger who is one of the best defenders in the Premier League .
“He’s probably got a dressing room where it might be a little bit heavy in terms of when he looks at the window in January and the summer, it might be a case of three or four need to leave.”