Nicolas Jackson is a player of extreme contrasts, blowing hot and cold. Scoring goals Alexander Isak and Erling Haaland would be lauded for, then missing shots to Rasmus Hojlund and Darwin Nunez levels of derision.

He therefore divides opinion, and in this summer of the striker merry-go-round, it is not merely Chelsea but also Aston Villa, Newcastle United and Manchester United who are asking, what exactly is Jackson’s level?

Two years into Premier League life, the Senegal international’s talent and temperament wavers, while the stark contrasts extend to his own thinking.

“Competition? I have no competition,” Jackson told Senegalese outlet D Sports this week.

With Liam Delap and Joao Pedro arriving at Stamford Bridge this summer, practically everyone else would beg to differ, makin

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