Kilmarnock sign Rangers defender Mayo on loan
The 22-year-old Scotland U21 international arrives following loan spells at Dunfermline and Partick Thistle.
Mayo told Kilmarnock's website: "I’m delighted to join Kilmarnock. It’s a really exciting opportunity and I’m looking forward to a big season for both me and Killie.”
Killie boss Derek McInnes said: “Lewis started really well in his loan spell with Patrick last season and showed signs that he’s clearing improving. We look forward to working closely with him to develop him and I’m sure he’ll help us in the challenges ahead.”