By Mark Jones Dele Alli says he’s suffered a new injury setback having been on course for a return to first-team training with Everton. The former Tottenham and England star has been battling a long-term groin issue since February, but Toffees boss Sean Dyche recently said that the club had been managing the problem in the hope to get the midfielder back up to speed and around the first-team setup. And an Instagram post on New Year’s Eve, Dele thanked Everton fans for their patience with him, writing: “As the year comes to an end, I just wanted to say thank you for the incredible support I’ve …