Hull have signed defender Ola Aina from Chelsea on a season-long loan.
Aina, 20, is the Tigers' first signing since Russian head coach Leonid Slutsky, a good friend of Chelsea owner Roman Abramovich, replaced Marco Silva last month.
"The Tigers have signed 20-year-old right back Ola Aina on a season-long loan from Premier League Champions Chelsea," Hull said in a statement.
"After completing the move earlier (on Tuesday), Aina joined up with the rest of the squad to fly to Portugal for a pre-season training camp."
London-born Aina progressed through Chelsea's academy and made his first-team debut last August in a League Cup win against Bristol Rovers.
He made his Premier League bow as a substitute against Leicester in October and has made a total of six senior appearances.
Despite representing England at Under-16 through to Under-20 level, the right-back has committed himself to Nigeria.
"It's my first loan move away from Chelsea and I just want to hit the ground running," Aina said.
"I'm looking forward to getting to know all of my new team-mates during the training camp in Portugal."
Hull have sold Curtis Davies, Harry Maguire and Josh Tymon to Derby, Leicester and Stoke respectively following relegation from the Premier League last season.