Dundee United full-back Andy Robertson has completed his move to Hull City in a deal worth £2.85m to the Tannadice club.
Robertson only joined United from Queen's Park last summer but enjoyed an outstanding season, which included an international debut and being named PFA Scotland Young Player of the Year.
He has agreed a three-year contract with the Premiership club, who are managed by Steve Bruce.
Moving in the opposite direction is 21-year-old left-back Conor Townsend, who has a agreed a season-long loan deal.
Dundee United boss Jackie McNamara told the club website: "I was delighted to secure Conor so quickly. He is a really good defender - his athleticism and height will enhance our squad."