Well, then there is no need to worry , WE are capable enough to handle security on our own, a nation who can fight n win War on Terror , can defend itself as well. Any Troops / assets sharing will purely be for Joint Training n interoperability of all the sources.
What if I assume that China is trying to establish a base in GCC ?
Now that is a debatable topic, French present in UAE, USA in KSA.
USA wouldn’t let KSA allow China establish a base in KSA neither is China stupid to do such as USA will monitor and gather data of Chinese weapons. I would also not recommend KSA for such as The giants will make the KSA a playground.
This leaves Either Oman, Yemen or Africa.
Yemen ? A good possibility, KSA and UAE reportedly achieved success at some key areas as per some news outlets, Maybe China can establish a base in Yemen, Away from USA base in KSA, Also gets support from UAE and KSA in turn these both countries can benefit from China without USA intervention.
Oman ? Definitely a possibility, Somalia ? Even greater possibility.
Base in Somalia means securing Trade route from CPEC’s Gwadar route to Africa for future Chinese ships from Somalia Pirates as well as China establishing some sort of economic zones in Africa to capture the market directly.