McClaren told a press conference: "We acquired a passport and we expected him to be coming to this camp but on a conversation with his family, he's not going to commit at this time to anybody. So he's taking his time over that. It's a little bit disappointing, we probably have to be more patient.
"We will keep the contact. We will keep pursuing him because I know from my conversations with Mason that he loves Jamaica, he respects Jamaica. He wants to concentrate on club football and not commit to an international team at the moment.
"We have to respect that, however much we've worked to get him here for these camps. So, who knows in the future."