Alex Telles followed Edinson Cavani to Manchester United as Chris Smalling heads to AS Roma.
England under-21 center-back signed a five-year contract with the Merseyside club for a reported fee of £20m.
Senegal international has signed a five-year contract at the Stamford Bridge.
Catalan giants have confirmed the exit of Uruguayan striker on social media after reaching an agreement with Atletico Madrid for a fee of 6 million euros.
Spanish left-back joins Gareth Bale in moving to the North London club after the club paid a fee in the region of €30 million.
Wales International returned to Spurs after leaving the club in 2013 for a then world-record fee of €91 million.
Former Barcelona midfielder signed a long term contract with the Merseyside club.