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Alberto Contador says he will "not waste energy" on Oleg Tinkov after the outspoken Russian described the Spaniard as a "limping duck" and a "sad person".
Tinkov launched an astonishing attack on the two-time Tour de France winner in October after his Tinkoff cycling team - which Contador was a part of - disbanded.
The 49-year-old questioned whether Contador - who will ride for Trek-Segafredo in 2017 - should continue cycling after struggling with injuries, although he did describe him as a "great champion".
Contador was less than complimentary about his former boss when speak to Cadena SER on Tuesday, the seven-time grand tour winner expressing his relief at not having to work with Tinkov anymore.
"He has been part of my career, which fortunately is finished," Contador said.
"I have new challenges ahead now. I will not waste energy on him. He doesn't do anything for me. He has a lot of money, but doesn't know how to manage it.
"If those statements [in October] came from a person that you had affection for, then you'd care. In my case, it does not affect me at all.
"I was taught a set of values, among them respect, you should always have respect for people.
"There are people who perhaps do not think that way, that's the way I see it. I'll drink champagne with friends, not with him [Tinkov]."
And Contador hopes to be drinking champagne in July at the Tour de France, the 34-year-old aiming to challenge Chris Froome for the yellow jersey.
He added: "I'm preparing with the thought of winning the Tour. If you want to win, you have to see it and believe that you can win.
"I would not sign up for anything less than winning the Tour."