Spanish veteran defender Ivan Marcano has signed for Serie A giants Roma, the Italian side confirmed on Thursday.

Marcano has agreed a three-year contract until June 2021, that includes an option for a fourth year.

The 30-year-old arrives on a free transfer from Portuguese champions FC Porto where he has played for the past four seasons, winning the league title last season.

"I am very happy to be here, because Roma is a great club that is moving in the right direction, following a clear sporting project," Marcano said.

"I also believe the footballing philosophy of the team will fit well with my strengths and characteristics."

The former Spanish Under-21 international made more than 150 appearances for Porto, having previously played for Villarreal, Rubin Kazan, Racing Santander and Olympiakos, with whom he won the Greek title twice.

"The signing of Ivan Marcano is the addition of a player who will bring his quality, his physical strength and his vast experience to the club," Roma sporting director Monchi said.

"I wish him all the luck in the world with this new adventure."

Marcano becomes Roma's second signing for next season after 21-year-old Croatian midfielder Ante Coric last Monday.

Roma finished third in Serie A this season securing Champions League football, having reached the semi-finals this season.