The past fortnight has had the Falcons rule out 2013 premiership players Jordan Jones and Rohan Kerr for the rest of the WAFL season, with both footballers requiring surgery.
Jones had surgery on a troublesome hamstring on Tuesday, while Kerr is still discussing treatment options for a back complaint.
Monaghan said the club had not settled on a surgeon for Kerr.
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READ NOW"There's not a real rush, he can't play in the short term," he said.
"We'll just be counting back from November when we start our pre-season so he's probably got a month or six weeks before it's necessary that he has the operation."
The Falcons mentor said the club was devastated for both players, who caused dilemmas for opposition coaches and were "clearly" in the side's best 22.
But he talked of West Perth's "philosophical" approach to situation.
"When they're two exceptionally-talented players, we'd prefer them to be playing," he said.
"(But) it gives us plenty of opportunity to blood some young fellas.
"They bring a certain enthusiasm" they want to establish themselves as players so it's a good situation on one hand."
Monaghan mentioned Corey Chalmers, Joe Morrow, Tyler Keitel, Matt Johnson, Luke Meadows and Drew Rhode as those who were benefiting from senior time.