"I think if I'm the head coach from day one we will be far, far away from the relegation zone," he told reporters.
"We would be safe five games ago already. I truly believe if I will be here with my staff from day one we will be nowhere near where we are right now."
Since taking over, Muslic has managed to collect 23 points in 19 matches - a marked improvement on Rooney’s record - and has injected belief into a squad that appeared directionless just months prior. Their 3-1 win against Coventry City on Monday has breathed fresh life into their survival hopes, though the task remains daunting.
"The performance today, the performance at Middlesbrough," Muslic told BBC Sport after the Coventry win.
"We've taken nine points at Home Park against Norwich, against Sheffield United, against Coventry. These are teams playing for the Premier League and they all lost here in Plymouth at Home Park, that gives me the confidence."