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Chelsea were linked with Richarlison during his time at Watford, before he eventually sealed a move to Everton.
The Brazilian has progressed at the Goodison Park and has been linked with a move to Manchester United.
Chelsea are keen on signing a new winger during the summer transfer window, and Wilfried Zaha and Jadon Sancho have been the most linked with a move to Stamford Bridge.
Richarlison is having a great season with the Toffees and had a good game as Everton defeated Crystal Palace 3-1. The Brazilian can play as a winger and also a striker.
Speaking after the game, BT Sport pundit Sam Allardyce hailed the forward’s importance and revealed that he’s turning into one of the best forward players in the league.
He told BT Sport: “Richarlison is turning into one of the best players up front in the Premier League.
“We saw that by the goal he scored and the header he got for the second goal. That’s a big relief because goals are going to make the difference in any team.
“I think Ancelotti is relieved at Dominic Calvert-Lewin scoring goals and I’m disappointed he didn’t get two today because that was an easy miss. I wanted him to score that goal to keep it going. It might not affect him because he’s in good form.”