Roma chief Umberto Gandini has taken aim at the mega spending of Chinese clubs.

Gandini doesn't expect the spending to last.

He said: “They've been doping football since last year, they're creating chances for some clubs which didn't think they could make investments.

“It's an artificial market which might not continue to import players, I'm talking about Jackson Martinez [of Guangzhou Evergrande] who you never hear of anymore.

“I wouldn't be surprised to see players coming back to Europe soon, but with absolutely unimaginable salaries being paid by the Chinese, because there isn't space for them."