LONDON, ENGLAND - JANUARY 03: Wayne Hennessey of Crystal Palace watches the ball as Alfie Mawson (obscured) of Swansea City scores the opening goal during the Premier League match between Crystal Palace and Swansea City at Selhurst Park on January 3, 2017 in London, England. (Photo by Julian Finney/Getty Images)

LONDON, ENGLAND - JANUARY 03: Wayne Hennessey of Crystal Palace watches the ball as Alfie Mawson (obscured) of Swansea City scores the opening goal during the Premier League match between Crystal Palace and Swansea City at Selhurst Park on January 3, 2017 in London, England.  (Photo by Julian Finney/Getty Images)