M696 Leaking rear shock abosorber

Hello Gents.

After 4 months of Monster ownership I've encountered my first issue with the bike. While riding through France earlier in the month, I started to notice a few drops of fluid on the rear swing arm of the bike. After a couple of clean ups it's obvious that the problem needs looking at, as the shock itself is now a little gunked up at the bottom of the shock near the collars to tighten/loosen.

Any suggestions or ideas to the type of repair/cost? I don't have any photos of the bike, but I'll add them to the thread shortly.

Thanks,
Tom