Arsenal in line to seal double signing of David Luiz and Kieran Tierney

David Luiz looks to be on his way to Arsenal after not training with Chelsea on Wednesday and Unai Emery is further strengthening his defence with Celtics Kieran Tierney for 25m David Luiz could be on his way to Arsenal, with Chelsea believed to be open to letting him join their London rivals as Unai Emerys side are also set to seal the 25m signing of the Celtic defender Kieran Tierney on a busy transfer deadline day. David Luiz signed a new two-year deal in May, having come within weeks of becoming a free agent in what was an unusual step for Chelsea, who have a policy of not offering more than one-year deals to players over 30. Yet with …