Bologna chief Marco di Vaio insists Joshua Zirkzee isn't for sale.

After a slow start to his Bologna career, Zirkzee is now hitting his straps.

Zirkzee has 5 goals and 2 assists in 13 appearances so far this season and is being linked with AC Milan.

But Di Vaio told TMW: “We absolutely don't think of selling him.

"Rumours are of little use, he must continue to work and play, to grow and provide continuity by helping his teammates. When he starts to become a point of reference he needs help even in difficulties.

"Let's proceed, all together, and make the potential concrete and constant."