He leaves the National League North club after two-and-a-half years to link up with Accrington Stanley as the 25-year-old midfielder makes a two-division move.
The League Two side have a history over hooving up talent from below and last week added Kelsey Mooney from Boston United.
“When I first heard about it, it was a no-brainer, get in the EFL and showcase what I can do,” he told Stanley’s website this afternoon.
"John Doolan and Ged Brannan have spoke highly of the club, brought me in, and they've just said what they want to do next season
"Hopefully I can get as many games as I can under my belt, get some goals, get some assists, and we do well in the league."
Port said in a statement: “Tyler has not only been a brilliant player on the pitch, but also a model professional off the pitch.
“We wish Tyler all the best for the future. In total Tyler made 93 starts for the club and had 8 sub appearances and was presented with his “Ty 100” shirt ahead of the final game of the season at South Shields.”