AS Roma have completed the signing of Radja Nainggolan.

The midfielder had been in co-ownership with Cagliari.

Nainggolan took to Twitter to celebrate the moment.

“This is a fantastic day, finally I am 100 per cent Giallorosso. It's what I and the club always wanted! I thank the club and Pallotta for their efforts.

“I will repay them on the field as I have done so far and even more! Forza Roma! Now our minds focus on to the next season!"