The Blues boss has praised the impact of John Obi Mikel.
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The above picture sums up John Obi Mikel's Chelsea career rather well. The cameras are focusing on Diego Costa, the main man. Over
the years, that main man has been Didier Drogba, Frank
Lampard, Eden Hazard and more.
But never has it been Mikel, who - aptly - is in the background
with Costa.
But he is always there. And his manager knows his value. Indeed, according to Jose
Mourinho, Mikel offers Chelsea stability, even if it's just by
coming off the bench.
“People on the bench are also coming on strong, the way they
are playing, the way they react. Mikel comes on and gives
stability to the team. I think we’re in a good moment,
" Mourinho is quoted as saying by the London Evening
Standard.
“When I play Mikel, I don’t need to say something to Nemanja
Matic or Fabregas or to the team.
"They know what is going to happen, what the team are
going to do, they know what Fabregas can give us when he
then plays as a No.10 rather than a No.8. The team is very
solid."

The Blues are currently top of the Premier League, five points clear of second-placed Manchester City, and are unbeaten after
seven league matches. They are also yet to lose in the Capital
One Cup or Champions League. How important is Mikel to Chelsea?

Source: www.hereisthecity.com/en-gb/2014/10/10/mourinho-this-midfielder-gives-chelsea-stability-but-hes-not-in/

how important is rosicky to arsenal?

True talk, Coming from a great coach.
If he says you are no longer good, dats it. Vice versa. U cn ask casillas.