Cagliari midfielder Radja Nainggolan is unsure if Juventus were serious about signing him in January.

Juve targeted the midfielder at the start of this year before netting Simone Padoin from Atalanta instead.

"I never spoke to the Juventus officials," he told the Corriere dello Sport. "I only had Cagliari in my mind and I only read about it in the newspapers.

"The clubs may have discussed a transfer, but I don't know anything about that."