Matic completed a £21million transfer back to Stamford Bridge from Benfica last night, having left the club three years ago as part of the £25m deal which saw David Luiz come the other way.
Matic added: “Chelsea are a very good team and have very good young players. In the next few years Chelsea will show power.
“Of course we need a bit of time because if a player is young he needs time to show all his qualities but I think Chelsea will be one of the best teams in Europe.”
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