The move was made after Matt Hunwick left practice early and is questionable to play Thursday,
Loov was selected with the third-last pick in the 2012 NHL Draft, 209th overall and has yet to make his NHL debut.
The 23-year-old has one goal and 10 assists in 48 games with the AHL-leading Marlies, and is a plus-12.
Hunwick has spent much of the year playing with Morgan Rielly, and has one goal and seven assists in 54 games. He is in the first year of a two-year, $2.4-million contract.