Atalanta chief Giovanni Sartori is reluctant to name their price for Franck Kessie.

The young midfielder revealed work permit problems denied him a move to Sunderland last summer and admits his ambition is to play for Manchester United.

Sartori insists they're not actively inviting offers for Kessie.

"His price? The figure could be very high, but we do not want to think about that because we have no intention of putting him on the market, let alone in January," he said.

"Kessie will stay here."