Chelsea are reportedly not prepared to sell Diego Costa this summer under any circumstances.
The 26-year-old joined the Blues from Atletico Madrid last summer and struck 21 goals in 34 games during his first season in English football.
A report in Spain had claimed that the Spanish international was unhappy with life in London, with the climate a big issue for the striker.
However, according to the London Evening Standard, Chelsea are unprepared to sanction a move for a player that performed a key role in their Premier League success during the 2014-15 season.
Costa is believed to be pining for a return to Atletico.
