Reading have announced their first signing of the January transfer window with Sporting Lisbon defender Daniel Carrico arriving in Berkshire.
Carrico, 24, moved to Reading for a fee of £600,000 on a deal until the summer of 2015, with the option of a one-year extention.
The former Portugal international was due to be out of contract at the end of the season but the Royals have moved to secure his signature early.
A statement on the club's website read: "Reading football club are delighted to confirm we have agreed a deal to sign Sporting Lisbon's club captain, midfielder Daniel Carrico.
"The 24-year-old joins the Royals to begin the club's investment in this January window. He is a versatile player and can play in the centre of defence as well as in midfield. He has signed a contract until the summer of 2014, with the option of a further year.''
Reading said Carrico, who has only made two appearances for Sporting this season because of his contractual situation, will join up with his new team-mates later this week.
Carrico said on Sporting's website: "It is with mixed emotions that I write this farewell message. I'm leaving the club of my heart, where I had the privilege of graduating (through the youth ranks) and serving for several years.
"I'm leaving because I understand that I am at a stage in my career when I have to take chances. Moreover, the proposed project is extremely exciting to me and know I can succeed.''Information from the Press Association was used in this report