According to media reports in Italy, the deal will be worth €15million when completed.

The 26-year-old Ghana international spent his entire playing career in Italy, starting from the Inter academy in 2010, going on to Livorno, Sampdoria and since the summer of 2015 at Sassuolo.

A rugged midfielder, he has contributed one goal and five assists in 13 Serie A games this season.

Duncan already worked with coach Beppe Iachini at Sassuolo in 2017-18.

He has made eight appearances for Ghana's senior national team.