That's the opinion of Shropshire Star reporter Joe Edwards, who saw the Manchester United goalkeeper first-hand last season during his loan spell at Shrewsbury Town.
The 21-year-old stopper was named in the PFA League One team of the year and helped Town reach the play-off final at Wembley. He made 48 appearances in total, but was banned for three games after an incident involving items thrown from the crowd when the Shrews played Blackburn Rovers.
And Edwards told The Star: "Dean is genuinely a goalkeeper who has the attributes to become established in the top flight. A brilliant shot-stopper, he is also a good talker and not afraid to get his point across to players of a lot more experience.
"Like anybody who plays between the sticks, he had a bit of a blip last season - a few mistakes, an FA misconduct charge - but he bounced back in style.
"From what I've seen, I don't think he should have any major problems with making the step up to the Championship. He is a very confident, passionate lad and should become a favourite of the Blades fans."
Another journalist, Shrews fan Steve Jones, remembers Henderson as "simply undroppable" during his time on loan in League One.
"He contributed invaluably to Town’s outstanding defensive record last season and the sight of Henderson’s name on the teamsheet undoubtedly filled fans with confidence," Jones said.
"That’s even more impressive when you consider he was still only 20 years old. There was a Checkatrade Trophy match against Blackpool in January and as soon as the final whistle blew to confirm penalties, there was a bullishness in the crowd.
"Such was their confidence in the third tier’s only England U21 international – another testament to his quality."