Arsenal have reached an agreement with Chelsea to sign centre-back David Luiz for £8m. 32yo Brazil international will sign a 2yr contract. Deal for Celtic left-back Kieran Tierney 5yrs, fee £25m. Medicals today ahead of putting pen to paper before 5pm deadline #AFC #CFC #CelticFc

— David Ornstein (@David_Ornstein) August 8, 2019