More importantly than dissecting last night's game - what do people actually think he's good at? Why do you rate him as a future United keeper?
On just about every metric of modern goalkeeping, I see nothing that makes me think he's an outstanding number 2, never mind a future number 1.
Height? He's one of the shortest keepers in the league. Plenty of pictures show he's a similar height to Pickford, who's routinely criticised for his lack of size and presence.
Proactive sweeper keeper? Nope. Goalline keeper. Ranked 16th of 20 starting goalkeepers last season for Defensive Actions outside the penalty area. 22nd of 24 the year before in the Championship.
Distribution? Looks actively terrified of the ball. Obviously had the lowest completion % of any goalkeeper in the league last season - although arguably much of that was down to Sheffield United's tactics. He had a
comically low number of actual passes last season.
Are his long kicks actually good? No, is the quick answer. A 'Launch' is defined as a goalkeeper pass attempt longer than 40 yards. Henderson's Launch completion rate was just 29% - ranking him 20th of 20 starting keepers. For reference Alisson was 1st with 54%. De Gea was right in the middle, 10th at 39%.
1v1? Given his lack of size, this probably isn't surprising, but he ranked 18th of 20 starting keepers in 1v1 Save Percentage last season. Pope was Number 1 by quite a margin, followed by Alisson and then Ederson. De Gea was 6th.
Shot stopping? Excepted Goals/Goals Conceded seems to be the most used metric here. With it, Henderson ranked 6th of the 20 starting keepers last season - behind Lloris, Dubravka, Guaita, McCarthy and Leno. De Gea was 10th - surprisingly ahead of Alisson in 12th. Pickford and Kepa were 19th and 20th.