Kell Brook has signalled his support for Billy Joe Saunders - insisting he is a “clean athlete.”
Saunders lost his WBO middleweight title when he was denied a licence to box in Boston, USA, last week after testing positive for a stimulant.
Saunders, who vacated the title before he was stripped of it, delivered a positive test for oxilofrine, which supposed to help burn fat and may increase adrenalin.
The 29 year old insists the test result came from "a common decongestant nasal spray" and was not a performance-enhancer.
Former world champion Brook, a pal at the Ingle's gym in Sheffield, said: "I am gutted for him.
"I was away in Fuertaventura when this all happened so I've not been around him at Wincobank, but I feel for him.
"I don't understand the situation, but it's not good. He is 100 per cent a clean athlete.
"If the fight (scheduled as a defence against Demetrius Andrade) had gone ahead we're talking £2m. To lose all that because of a nasal spray is not right...I know he's clean."
The test results blow came just days after Saunders was clobbered with a £100,000 fine by the British Boxing Board of Control for his his behaviour in Sheffield, when he jokingly offered crack to an apparent drug addict, on video.
Saunders later apologised for "banter that had gone wrong."
Meanwhile, Ingle's Kid Galahad is tapering down to his world title eliminator, this weekend.
The Sheffield featherweight takes on Liberia-born Toka Kahn Clary at the TD Garden, Boston.
Galahad has an unbeaten 24 fight career - his rival has 25 wins, one loss.