Argentine international midfielder Diego Perotti has signed for Roma on a six-month loan deal from rival Serie A side Genoa, the capital club said on Monday.

The 27-year-old former Boca Juniors star is expected to line up for Roma when they travel to Sassuolo on Tuesday looking for a second successive win under new coach Luciano Spalletti, who was delighted with the signing.

"Diego Perotti has joined and he can play his part. He can operate in several positions," Spalletti said on Monday.

Perotti has two caps for Argentina and played six seasons at Seville where he won the 2014 Europa League title before he moved on to Genoa at the start of last season.

Runners up behind Juventus both last season and in 2014 Roma sit fifth in Serie A, 12 points behind leaders Napoli.

Last week Roma signed Italy striker Stephan El Shaarawy, also on a six-month loan deal, while the club sold Ivorian striker Gervinho to China's Hebei Fortune in late January.