Mark Teahen has been returned to the Diamondbacks from the Reds due to an issue with his physical, according to MLB.com's Mark Sheldon (on Twitter). Matt Andrews, the broadcaster for Cincinnati's Triple-A affiliate in Louisville, first reported that Teahen was returning to the Diamondbacks organization (Twitter link).
On Tuesday, the two sides agreed to a deal that would send Teahen to the Reds for cash or a player to be named later. Teahen is hitting .211/.318/.254 through 85 plate appearances for Triple-A Reno thus far. The former supplemental round pick hit .287/.354/.455 for the Royals to 2006-07 but hit just .255/.315/.390 over the next four seasons. He spent the 2012 season with the Nationals' Triple-A affiliate and signed a minor league deal with the D-backs this offseason.