Arsenal's Sokratis Papastathopoulos looks dejected after conceding their first goal during match Premier League between Watford vs Arsenal at Vicarage Road, Watford, Britain, September 15, 2019. Arsenal squandered a two-goal lead as Watford hit back to draw 2-2 in new manager Quique Sanchez Flores's first game of his second stint in charge at Vicarage Road. REUTERS/David Klein

Arsenal's Pierre-Emerick Aubameyang scores their first goal during match Premier League between Watford vs Arsenal at Vicarage Road, Watford, Britain, September 15, 2019. REUTERS/David Klein

Arsenal's Pierre-Emerick Aubameyang scores their second goal during match Premier League between Watford vs Arsenal at Vicarage Road, Watford, Britain, September 15, 2019. Action Images via Reuters/John Sibley

Arsenal's Pierre-Emerick Aubameyang celebrates scoring their first goal with Sead Kolasinac during match Premier League between Watford vs Arsenal at Vicarage Road, Watford, Britain, September 15, 2019. Action Images via Reuters/John Sibley

Watford's Roberto Pereyra celebrates scoring their second goal with Abdoulaye Doucoure during match Premier League between Watford vs Arsenal at Vicarage Road, Watford, Britain, September 15, 2019. Action Images via Reuters/John Sibley

Arsenal's David Luiz, Granit Xhaka, Joe Willock and Nicolas Pepe look dejected after conceding their second goal during match Premier League between Watford vs Arsenal at Vicarage Road, Watford, Britain, September 15, 2019. REUTERS/David Klein