Johnnies assistant ‘Slice-d’ off staff

Barry “Slice” Rohrssen is officially out at St. John’s after just one season in Queens.

The associate head coach’s name was taken off the school’s web site on Thursday, and a school official said he no longer works for St. John’s. In June, The Post reported Rohrssen, known as a recruiting guru, and the school had been working on an expensive buyout, though St. John’s declined to comment on such matters.

The former Manhattan College head coach signed a six-year contract with St. John’s last April that reportedly was paying him up to $400,000 per season.

According to multiple sources, special adviser Mitch Richmond likely will be elevated to the third assistant spot on the coaching staff, alongside Greg St. Jean and Matt Abdelmassih. This week, head coach Chris Mullin pro- moted Luca Virgilio from a graduate assistant to assistant to the head coach.

Sources told The Post Rohrssen was unhappy with his role at St. John’s (he expected to have a bigger say in everything from recruiting to in-game strategy), and his relationship with childhood friend Mullin had soured. Abdelmassih, who was previously at Iowa State, has earned kudos for recruiting virtually the entire roster, including newcomers Bashir Ahmed, Shamorie Ponds and Richard Freudenberg, and sit-out transfers Marvin Clark Jr. (Michigan State) and Justin Simon (Arizona).

The 56-year-old Rohrssen, a Brooklyn native who also attended Xaverian High School like Mullin, left Kentucky to help his close friend. He developed a wellearned reputation as a recruiting guru as an assistant coach at Pittsburgh from 2001-06 and 2013-14, where he regularly landed top New York City prospects. He was the Manhattan head coach from 2006-11 and spent a year at Kentucky before coming to St. John’s.