Idrissa Gueye has claimed that Ismaila Sarr 'can be the X-Factor' for Senegal at the World Cup.
Senegal will take on England on Sunday in the last-16 of the competition, and Sarr could have a significant part to play in proceedings.
The Watford winger scored in Senegal's crucial victory over Ecuador as they secured their place in the knockout stages, and Gueye has backed Sarr to continue making an impact.
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