My experience tells me that this little line in the blessed "Service Manual" would precipitate a discussion that started from "You must use our implementation of ITIL, with it's 3 month change cycles".
I don't think you realise just how much we challenge the status quo, or the level of pushback that we are getting.
I'd prefer "implementing the appropriate amount of process, tools and documents needed to operate your service, which you might do by implementing one of these frameworks".  That still gives the strong, clear guide that it's about a new implementation that is appropriate.