"Bouba wanted to sign for a further year, and that is what they have given him.
"I know there is a lot of interest and if a club puts the right offer in, I am sure it will be accepted."
McKay is currently in the spotlight as France's national division of financial investigations began a probe amid claims of embezzlements during transfers to and from Paris St Germain.
Nine agents had their homes raided last March, including Monaco-based Willie McKay, and Olympic Marseille director Pope Diouf, a former associate of McKay.
No charges have been made against any agents at this stage because the investigation is ongoing.