Willie Collum, the Scottish referee, is to handle Barcelona's Champions League tie against Ajax tonight.

Collum was criticised by both Inverness Caledonian Thistle and St Mirren at the weekend following Caley's 1-0 win in Paisley, where he produced eight bookings and sent off Ryan Christie.

A week ago, Collum produced 12 yellow cards during Romania's Euro 2016 match against Hungary.

Tonight's tie in the Camp Nou will be his third Champions League tie this season.