Daniel Kelly has agreed to join Millwall in January once his contract at Celtic officially expires at the end of the year. Lions boss Neil Harris confirmed the news earlier this week, stating: “Dan has agreed to join the club. A deal has been agreed and he has signed. He officially joins us in January. He is a young player that falls into the mould of Romain, Aidomo and Alfie – that we think has got huge potential. “We want to be that football club that brings players in and gives them that opportunity. It is the only way for us as a football club to evolve.” Previously, Brendan Rodgers took a…