Brighton 1-1 Arsenal: Ozil substitution was tactical - Unai Emery

Arsenal manager Unai Emery says his decision to substitute Mesut Ozil at half time in their 1-1 Premier League draw with Brighton was "tactical".

MATCH REPORT: Brighton 1-1 Arsenal

Watch highlights of the Boxing Day Premier League games on Match of the Day at 22:20 GMT on BBC One and on the BBC Sport website.