The NBA player divorced Longoria in January after just three years of marriage, and she is said to have already moved on with 25-year-old actor, Eduardo Cruz.
And an onlooker at the Lavo nightclub in Vegas' Palazzo hotel said they overheard Parker brush the news aside.
The eyewitness told Life & Style magazine that they heard the 28-year-old declare, 'Eva can do whatever she wants!'
The source continued, 'Tony and his friends danced with nearly every girl at his table. It was clear throughout the night he had a fondness for brunettes.'