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Chelsea have been warned that Estevao Willian could follow the footprints of Jadon Sancho and fizzle out soon just like the England international, who has been struggling for form for the last few years after a bright start to his career. Following a loan move from Manchester United, Sancho showed sporadic flashes of brilliance at Stamford Bridge last season, scoring five goals and providing 10 assists in 41 appearances, and had a permanent clause in his contract worth up to £25 million ($33m) that Chelsea could have exercised. But disagreements over personal terms scuppered the deal, and the Blues paid a £5m penalty fee to terminate the arrangement.