[2] He spent the majority of the following season at Glenafton again, having signed another one-year loan deal in August 2015, but returned to Ayr United to make his debut in the SPFL, coming on as an 87th-minute substitute for Alan Forrest in a 1–0 defeat to Albion Rovers.
[4] During this season, McGuffie continued to make more appearances off the bench as he had impressed manager Ian McCall with his under-20s performances.
The club were relegated on the final day of the season, but had a good run in the Scottish Cup, reaching the quarter-finals where they were knocked out by Hibernian.
He played a bit part role mainly coming on as a substitute, but found it hard to break in to the free scoring side.
He did make an impact coming on against Queen's Park and scoring a brace in a 4–1 win for Ayr.