BRENTFORD, ENGLAND - JANUARY 09: Neil MacFarlane, Head Coach of Brentford B reacts as he takes the place of Thomas Frank, Head Coach of Brentford (not pictured) who is self-isolating due to a positive test for Covid-19 during the FA Cup Third Round match between Brentford and Middlesbrough at Brentford Community Stadium on January 09, 2021 in Brentford, England. The match will be played without fans, behind closed doors as a Covid-19 precaution. (Photo by Warren Little/Getty Images)