He is very invested in the football club and speaks very passionately, so it didn't take much convincing to join," Targett said.
He noted the standard set by other recently promoted teams as inspiration.
"It's going to be a massive challenge, but we can take huge confidence from what the likes of Sunderland and Leeds did last season," Targett said.
Targett brings experience from 164 top-flight appearances across spells at Southampton, Aston Villa, and Newcastle United.
At Hull, he will compete with Ryan Giles and Matty Jacob on the left flank under manager Sergej Jakirovic.
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Hull City will open their Premier League campaign against Manchester United on August 22.
