It was announced in April 2014 that he had left Glasgow Warriors after 20 appearances and four tries over two seasons.[4]
On 2 November 2014, Aviva Premiership side Exeter Chiefs announced that McGuigan would be joining them for the 2014–15 season on a one-year deal.[5] On 27 July 2016, McGuigan signed a two-year deal with Premiership rivals Sale Sharks from the 2016–17 season.[6]
International career
McGuigan received his first call up to the senior Scotland squad by coach Gregor Townsend for the Autumn Internationals, making his debut against New Zealand as a second-half replacement.[7] During his full debut the following week, McGuigan scored his first two international tries against Australia.[8]
After a three-year stand-down period from international rugby, it was announced that McGuigan had switched counties to be able to represent the Namibia national team, but was not selected for the 2023 Rugby World Cup squad.[9]