Slaney was a free-agent signing orchestrated by former Maple Leaf staff member Joe Nieuwendyk.
2008-09: Awarded a contract after an impressive season with Cape Breton. He led the team with 81 points in 63 games and also led in goals with 36. On top of a successful regular season, Slaney was having an impressive playoff before going down to injury. He scored five goals and four assists in six playoff games.
2009-10: Slaney would split his time between the Marlies and Reading, unable to impress Leafs brass. In 34 games with the Marlies he would register 6 assists before being sent down to Reading where he would score a goal and 10 assists in 22 games with the ECHL club.
2010-11: Slaney skated in eight mid-season games and one April contest with the AHL's Toronto Marlies – spending most of his second pro season with the ECHL's Reading Royals. He had 1 assist and 2 PMs with an even plus/minus in nine games with the Marlies. He played 61 games for Reading and scored 7 goals with 17 assists and was +3 with 34 PMs. Slaney played in 4 of 8 playoff games for Reading and was an even plus/minus with 1 goal and 3 assists. Nashville acquired Slaney from Toronto as part of a multi-player trade in July 2011.