But the two Premier League sides also face competition from the likes of Real Madrid, AC Milan and Juventus in the race for the 24-year-old defender.
Spanish newspaper AS reports that Chelsea could make a £10million bid for the defender.
Benatia has revealed that he is set to leave Udinese at the end of the season.
“I have a deal with Udinese and I don’t think I’ll leave in January, as the club doesn’t want to sell me during the campaign,” Benatia told football-italia.
“However, I do think that I will leave at the end of the season.”
