The move was ratified on 2 January 2010, the first day of the winter transfer window. However Adiyiah was still not able to play, since he was called up by the Ghana national team to take part in the African Nations Cup. Upon his return, a month later, he also secured an Italian work permit, which he was still lacking, thus becoming definitively eligible to play. Despite this, he was never selected by head coach Leonardo during the remainder of the 2009–10 season. On 25 June 2012, Adiyiah completed a three-year contract with Arsenal Kyiv, ending his three years career with AC Milan.