In early October 2013, after three seasons as an undisputed first-choice,[REF] he renewed his contract until 2016 [REF].
On 7 January of the following year, Nainggolan was loaned to fellow league team A.S. Roma until the end of the campaign for a fee of €3 million, with an option to purchase 50% of his rights in the ensuing summer for €6 million [REF].