Newcastle earned a much needed victory against Fulham on Saturday evening and Harvey Barnes was quick to message Sean Longstaff on Instagram after his goal. The midfielder has score some pretty important efforts during his time in the first team with the one against PSG the most obvious highlight. After scoring against the Cottagers to secure an FA Cup fourth round victory, Longstaff took to Instagram to celebrate where Barnes responded with a pretty hilarious message. Longstaff helps Newcastle get back to winning waysNewcastle were nowhere near their best against Fulham, especially in the fir…