If he gets 1 MLB ab and again retires..he would again be eligible for the HOF in 5 yrs right?
They may have changed the rules since then, but that's the way it worked for Minnie Minoso:
Miñoso became eligible for election to the National Baseball Hall of Fame in 1970 – a year before the Hall began considering players from the Negro leagues or taking into account the accomplishments of major leaguers in the Negro leagues – and was dropped from the ballot for insufficient support. He was restored to the ballot five years after his final 1980 appearances as a player, and finally began to receive support as a candidate, remaining on the ballot for fourteen years before his eligibility expired; however, most of the writers voting by that point had little memory of him during his prime. In 2001, historian Bill James selected Miñoso as the tenth greatest left fielder of all time; based on the then-general belief that Miñoso was born in 1922 rather than 1925, James wrote, "Had he gotten the chance to play when he was 21 years old, I think he'd probably be rated among the top thirty players of all time."