The 36-year-old was given extra time off to recuperate after reaching the last-16 with Portugal at Euro 2020.
Ronaldo's future has been the subject of intense speculation due to the fact he has entered the final year of his contract and has yet to agree an extension.
He was happy to sign autographs and pose for pictures outside Juve's training base.
The Portuguese star has been linked with moves to some of European football's elite clubs this summer, including a return to Manchester United and a possible move to French giants Paris Saint-Germain, says the Daily Mail.
However, Juve have been quick to dismiss the prospect of selling Ronaldo as they prepare to improve on last season's disappointing fourth placed finish under new boss Massimiliano Allegri.
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!