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Diego Costa insists he is happy at Chelsea and has no plans to leave.

And that is bad news for Chinese Super League club Tianjin Quanjian, who are plotting a staggering £80million move for the striker.

Spain international Costa , who has hit 14 goals for the Premier League leaders this season, is the latest Blues star to emerge as a target for China's mega-rich clubs.

Shanghai SIPG sealed a £60m deal for midfielder Oscar last month, and his Brazilian countryman Ramires joined Jiangsu Suning for £25m a year ago.

But Costa says he is happy and settled at Stamford Bridge, after wanting to return to previous club Atletico Madrid in the summer.

Costa, who is in line for a new £200,000-a-week contract with the Londoners, said: "Yes, yes. I was about to leave.

"I was about to... but, well, I’m happy here as well and that’s that.

"I had the possibility to go to Atletico, because of a few things — the family, the life I have there... but not because of Chelsea, because, here, there’s a lot of love with the supporters, with the people, so I’m very happy. I'm very content.

Watch — Diego Costa amuses himself by inflicting pain on a pal:

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"There was one thing I wanted to change for family reasons but it wasn’t to be, and I continue happy here.

"It was important too that the manager, from the very first minute, said he counted on me."