The Portuguese ahead joined the Italian membership on a four-year deal for a reported $117 million switch charge in 2018 however has lower than one 12 months left on his present contract.
“Things change, it’s a law of life. Juventus remains, which is the most important thing.
“Cristiano gave his contribution, he made himself obtainable, now he leaves and life goes on.”
Allegri didn’t specify the place Ronaldo would go subsequent.
Ronaldo won the Serie A title in his first two seasons with the Old Lady but has been unable to lead the Italian club to the Champions League title — a competition he won four times with Real Madrid.
Juventus finished fourth last season and speculation over Ronaldo’s future has been swirling ever since.
Despite no official comment, multiple media reports have linked Manchester City with a move for the five-time Ballon d’Or winner.
However, the 36-year-old last played in the English Premier League for City’s fierce rivals Manchester United.
He scored 84 Premier League goals during his six-year stay at Old Trafford, winning three league titles and one Champions League while at the club.
During Euro 2020, Ronaldo equaled the all-time international goalscoring record of 109 international goals set by Iran’s Ali Daei.
A move to Etihad Stadium would also see Ronaldo under the tutelage of Pep Guardiola, who has repeatedly praised Ronaldo’s rival Lionel Messi as the best player in the world.
‘Cristiano will decide’
City, which missed out on England captain Harry Kane this summer, still needs a striker to lead the line and there have been few better than Ronaldo in his career.
When asked about Ronaldo in a news conference on Friday, Guardiola said the situation was out of his hands.
“I can not say a lot. Harry Kane introduced he’s persevering with to his membership, an distinctive membership like Tottenham. Cristiano is a Juventus participant and I am unable to say anything,” Guardiola said.
“All I can say in these three, 4 days left of the switch window, something can occur.
“Cristiano will decide where he wants to play, not Manchester City, not myself. There are many things that are far away.”