TORONTO -- Blue Jays manager John Gibbons is expecting to see a crowded clubhouse with rosters expanding this month.

The Blue Jays have already called up relievers Mark Leiter, Jose Fernandez and Christopher Guerrieri, along with starter Sean Reid-Foley, but more moves are imminent.

"There'll be a few [callups]," Gibbons said. "Some of them will come tomorrow."

The Triple-A Buffalo Bisons' season comes to a finish Monday night. The team failed to make the playoffs for the 12th consecutive season dating back to 2006 when they were the Triple-A affiliate of the Cleveland Indians.

With their Triple-A seasons over, John Smith and Richard Urena are likely to join the Major League club. Smith has a .268 batting average and a .358 OBP in 85 Minor League games this season. He's hit .255 with a pair of homers in 25 games with the Blue Jays this season. Urena has struggled this year in the Minors, hitting just .209 in 72 games, however he's hit .273 with a .333 OBP in 20 Major League games this season.

Donaldson to miss Blue Jays series

The Cleveland Indians placed former Blue Jay Josh Donaldson on the 10-day disabled list on Monday. The 32-year-old third baseman will play in rehab games with the Triple-A Columbus Clippers.

The transaction means Donaldson will not be with the Indians when they come to Toronto for a four-game series starting Thursday.

"I was looking forward to seeing him," Gibbons said.

Donaldson went 1-for-2 with a grand slam in his first game with the Clippers.