Everton are in talks for Tottenham midfielder Harry Winks.
Football Insider says Everton have approached Spurs over a potential deal.
Blues boss Frank Lampard has already seen two midfielders leave in the past 30 days.
Fabian Delph departed as his contract expired at the end of the season.
And Donny van de Beek returned to Manchester United following his unsuccessful loan spell.
But they could face competition for Winks in the form of fellow Premier League sides Fulham and Southampton.