One Celtic fan showed some next-level commitment, managing to get into the Old Firm derby without a ticket.Rangers hosted Celtic at the Ibrox Stadium on Sunday, with The Hoops walking out with the 2-1 win thanks to goals from Cameron Carter-Vickers and Tom Rogic.The Old Firm derby always has a tremendous atmosphere, with last week's being no exception, and one Celtic fan didn't want to miss out.The supporter claims that he applied for a job as a kiosk assistant at the Ibrox, in order to obtain access to the stadium.The fan says that he turned up for his shift on Sunday morning, but then hid in the toilets until the Celtic fans were allowed into the ground, managing to sneak in with them.

Another Celtic fan on Twitter spoke about the incident, that he actually met the fan at the ground, who explained just what had happened.

"Met a kid yesterday in ground who’d applied for a job as kiosk worker decked out head to toe in work gear and he’d to start at 9am. Min he got into ground to work he hid in toilets til Celtic fans got in then was bouncing about with us all day. I salute you kid what a move."

@joem4d1n3

The fan in question then responded to the tweet, saying:

"Hahahaha here I am m8. Feet are killing me wearing they shoes all day."

As can be seen from the embedded tweet above, the fan also posted a picture of his application form for the role of kiosk assistant at the Ibrox, as well as a photo of himself with the Celtic fans in the grounds.

The fan will probably argue that the risk was worth taking, with Celtic's 2-1 win taking them six points clear at the top of the Scottish Premier League.

Rangers actually took the lead in the game, with former Arsenal midfielder Aaron Ramsey opening the scoring after just three minutes.

However, Rogic and Carter-Vickers' goals in the first half secured The Hoops the win, taking them one step closer to regaining the title.

The Old Firm was marred by a number of incidents, with a Celtic staff member needing stitches after reportedly being hit with a missile from the Rangers supporters.

A number of incidents of crowd trouble marred the match, with the game being delayed for several minutes before the second half, after broken glass was spotted in the Celtic penalty box.

That wasn't all, as a member of the Celtic backroom required stitches after he was reportedly hit with a missile from the home end.

Scotland Police have even confirmed that three Celtic fans were arrested before the game after allegedly using glue and expanding foam on Ibrox entrances to try and stop home fans from attending the match.