I have enough verified detail to write a neutral, accurate summary without over-specifying the unclear "pioneer" quote.

SUMMARY:
Will Vaulks, the 32-year-old midfielder who helped Sheffield Wednesday win promotion from League One in 2023, has signed for League Two side Tranmere Rovers on a two-year deal after leaving Oxford United. The move marks a homecoming for Vaulks, who was born on the Wirral and began his career in Tranmere's academy as a nine-year-old, before going on to make over 600 senior appearances across a career that also took in Falkirk, Rotherham United, Cardiff City and Sheffield Wednesday.

Beyond his playing career, Vaulks has been recognised for his off-field work, winning the EFL's Player in the Community award this year for his mental health advocacy, which appears to underpin the "pioneer" tag used to describe him. His return to Prenton Park reunites him with the club where his footballing journey started, giving Tranmere the experience of a proven promotion-winning midfielder as they push for progress in League Two.