Watford remain interested in Rennes winger Ismaila Sarr but would have to break their club transfer record to sign him, Sky Sports News understands.
The 21-year-old is likely to cost £35m and it is understood that Roma are in advanced talks to sign him.
One source claims Arsenal will also be interested in signing him if they cannot complete a deal for Wilfried Zaha.
Sarr, who scored as Senegal secured their place in the last 16 of the Africa Cup of Nations with a 3-0 win over Kenya on Monday, joined Rennes from Metz in 2017.
He made 39 appearances for the Ligue 1 side last season, scoring 12 goals.
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