With regards to D Kyle. I think this is Donald Kyle who I believe was a Grade 1 official and was on the line for the 1960 European Cup Final at Hampden when Jack Mowat was the referee.
Donald Kyle also became a Referee Supervisor (Mowat was the Chief Supervisor) and was a close friend of Jack Mowat. Rollo was, indeed, his son. What is supposed to have happened is that Kyle Snr mentioned, in passing, to Mowat about the gifts (suits, I think) that Gordon, Kyle and David Mc Cartney (the 2nd linesman) received from AC Milan. Mowat passed this onto either/both UEFA and the SFA who investigated.
Clive Thomas is quite disparaging about Mowat in his book and seems to suggest Mowat received 'gifts' as a referee observer for FIFA in a WC tie in either Iran or Saudi Arabia