In the same week that Diego Costa left Chelsea for Atletico Madrid, Alvaro Morata scored a brilliant hat-trick for the Premier League champions.There will be no more Costa at Stamford Bridge as the Spain international closes on a return to Atletico, but the Chelsea supporters have a new hero in the shape of Morata, who has made a brilliant start to life in London.Indeed, the 24-year-old, who is valued at £50m by transfermarkt.co.uk, has scored six times in his first six Premier League appearances for the Blues.The striker had three in five entering Saturday's clash with Stoke City, but netted a treble at the Bet365 Stadium to help Chelsea record a strong victory over the Potters.As expected, Morata was voted as Chelsea's man of the match following a brilliant performance, and the club's supporters were out in their numbers on Twitter to pay tribute to the former Real Madrid forward.A selection of the best reaction can be found below:

https://video.footballfancast.com/video-2015/chelsea-quotes.mp4