Big names, such as Barcelona and Atletico Madrid have also, reportedly, expressed their interest in signing Thomas Partey.
The fan from China cycled over 13,000 kilometres across six countries before reaching the Saudi capital city of Riyadh, where he met the 39-year-old Ronaldo.
Besides Vinicius Jr, Jude Bellingham and Rodri are among the top Ballon d'Or contenders.
Lawyers representing the two parties met early on Wednesday after Mbappe, who joined Madrid this summer, had referred his case to the LFP's legal committee.
Guardiola, who led City to an unprecedented fourth title on the bounce, will be without star Spanish midfielder Rodri for the opener against the Blues after the 28-year-old was ruled