I teach and examine a core subject and in conversation back in September with a TA who supports some of my lessons, mentioned that I occasionally tutor GCSE too.
He is now looking for a tutor for his son, and caught me off guard during a lesson assuming I'd be available to do this.
I'm not currently tutoring and would really struggle to add to my workload at the moment, but also have reservations about working 'for' a colleague.
AiBU to say sorry I actually can't do this and how is best to go about it without offending him?