Rumors? No that was an attack on him in the Russian media. Mr. Yagudin was the first who said he had no injury. And he said it not once. And why? Because he is an envious person, and he knew Plushenko will have a great show tour which would have been the rival of Averbukh's shows. Yagudin skates in it.
Plushenk had injury. Everybody could see his scar in Tv news, could listen his doctor's opinion in Israel( he was operated in Tel-Aviv). But some Russians didn't believe it they said Plushenko made the scar with plastic surgery on his back, or they thought the withdrawal was an unpatriotic act. Hm.... after became clear he had a broken bolt in his back next to the spine. If anybody knows Plushenko and knows his story totally informed he won many titles with injury. In Sochi he had incredible pain, he couldn't handle it. But he wanted to ask a painkiller injection but he had no time after the warm up.. He was the first skater in the group.
Shame on those Russians! But as I sad most of the Russians like him, he was the most popular athlete in 2014. His shows are sold out.
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I remembered for this event. In 2015 that was a charity action where Plushenko's lot was master class with him. A master class was $11.000. He has been sold 3 times.
https://www.instagram.com/p/6LD59EPUBz/ - Dear Friends, we've got really exciting news!! The lot- masterclass by the most awarded professional ice-skater on the planet Evgeny Plushenko @plushenkoofficial has been sold for the third time! Evgeny was very impressed by the great desire to help Darina from a girl who was just late to give her bid during the auction because of the time difference!! So in the end it's 2 100 000 ( $ 33000 ) rubles raised from this lot in total!!!
Plushy's lots was sold to fans from London, Vladivostok (russians) and Japan.

I believe he will sell the individual training for $1000. But the young skaters receive many grants.