West Coast coach Adam Simpson says goalsneak Willie Rioli is returning home again to be with his pregnant partner.

Rioli is facing a ban of up to four years for allegedly tampering with his urine sample in August 2019 during a routine drug test.

The 24-year-old fled home to the Northern Territory when the adverse findings were made public last September but he flew back to Perth in January to rejoin the club for pre-season training.

Simpson confirmed on Tuesday that Rioli has left Perth again, this time to be with his pregnant partner.

“He’s driving back home,” Simpson said.

“He’s expecting the birth of his second child, the baby is due on March 13.

“He came down and reconnected with the players, but he’s got some stuff to do back home now.”