Complex sentence: On 15 January 2016, he moved abroad for a second time, joining English Football League Championship leaders Middlesbrough on a temporary basis until the end of the campaign and teaming up with several compatriots at the club, among them manager Aitor Karanka.
Split into simpler sentences: On 15 January 2016, Sola moved abroad for a second time, joining English Football League Championship leaders Middlesbrough on a temporary basis until the end of the campaign. He joined several compatriots at the club, among them manager Aitor Karanka.