The former Real Madrid star, 33, was left out of the Portugal squad yesterday amid allegations of rape made against him – which he denies.
But Allegri has confirmed he will take part in tomorrow evening's clash at Udinese.
The Italian boss said: "I've known Cristiano for three months now and for over 15 years of his career he has shown to be a great professional both on and off the pitch.
"He is ready to return to action tomorrow."
Ronaldo has been accused of raping Kathryn Mayorga in a Las Vegas hotel, with Juve posting a controversial Twitter statement yesterday.
Despite a massive backlash, Juventus said: "@Cristiano Ronaldo has shown in recent months his great professionalism and dedication, which is appreciated by everyone at Juventus.
"The events allegedly dating back to almost 10 years ago do not change this opinion, which is shared by anyone who has come into contact with this great champion."
And it would appear the boss is getting behind star man Ronaldo too, despite fans being left furious at the statement regarding the 2009 allegations.
Meanwhile, the ex-Manchester United star has attempted to clear his name, saying: "I firmly deny the accusations being issued against me.
"Rape is an abominable crime that goes against everything that I am and believe in.
"Keen as I may be to clear my name, I refuse to feed the media spectacle created by people seeking to promote themselves at my expense.
"My clear conscious [sic] will thereby allow me to await with tranquillity the results of any and all investigations."
Ronaldo does now face seeing his £1billion endorsement empire crumble around him – with Nike saying they're "deeply concerned by the disturbing allegations".
Source: Read Full Article