Roma midfielder Radja Nainggolan has Inter Milan medical ahead of move

Radja Nainggolan will finally leave Roma this summer. FILIPPO MONTEFORTE/AFP/Getty Images

MILAN -- Combative midfielder Radja Nainggolan is undergoing a medical with Inter Milan ahead of a transfer from rival Roma.

The fee is expected to be €24 million ($28 million) with two players -- veteran full-back Davide Santon and 18-year-old midfielder Nicolo Zaniolo -- also heading to Roma in exchange.

At Inter, Nainggolan will reunite with former Roma coach Luciano Spalletti.

Of the move, Spalletti said: "Nainggolan is the turbo that was missing in our motor."

The 30-year-old star was an integral member of Roma's run to the 2017-18 Champions League semifinals.

He spent 4 1/2 years at Roma, having made his Serie A debut with Cagliari.

Nainggolan announced his international retirement last month after being left out of Belgium's World Cup squad.