Answer
Kris Boyd joined Rangers in January 2006, becoming the club's record signing at the time. He was signed from Kilmarnock for a fee of £6.5 million, making him the most expensive Scottish player ever. Boyd had been in impressive form for Kilmarnock, scoring 25 goals in 30 league games during the 2005–06 season. He quickly made an impact at Rangers, scoring 13 goals in his first 14 league games.