Manager Brendan Rodgers revealed the midfielder has been spending time in the back four during training this week, to provide cover for his paper-thin defensive ranks.
Rodgers will be without new signings Darnel Situ and Rafik Halliche, as the pair are awaiting international clearance from FIFA, while Alan Tate (broken leg) and Garry Monk (foot) are sidelined.
That list of absentees leaves Rodgers with Ashley Williams and Steven Caulker as his only fit centre-halves for the trip to face the Gunners.
And while Dutchman Agustien admits he does not enjoy playing at the back, he is ready to lend a hand.
He said: "You have got to do what you have got to do, we all know the problems, it's not my favourite position but if I need to play there and help the team then I will.
"It's about the team and I will do it. I do not want to disappoint anyone. If the manager puts me there it is because he thinks I have the qualities.
"It doesn't really matter who we are playing against if I have to play there. It is not going to be easy, but I will always give my best for the team."
The Swans find themselves heading to the Emirates Stadium in the surprising position of being above the Gunners in the Barclays Premier League table.
Arsene Wenger's side come into the fixture on the back of their 8-2 humbling against Manchester United at Old Trafford, and a transfer window which saw them lose Cesc Fabregas and Samir Nasri.
And Agustien, 25, believes Swansea can get a result in London, as long as they have the confidence to take the game to their hosts, although he is disappointed not to get the chance to face Fabregas.
"I want to play against the best players so it's a shame I won't be able to play against Fabregas," he said.
"But Arsenal still have big players, but we have big players as well.
"We need to bring confidence and belief to the game. We are in a good flow and all the pressure will be on them.
"If we can get an early goal that would help because they would have to come on to us then.
"If we start well and keep the ball that will be good, they cannot score without the ball. We have a good chance there."
But Agustien is also wary of the possible impact of the new faces brought in by Wenger with Mikel Arteta, Yossi Benayoun and Per Mertesacker among those set to make their bows.
"They have been struggling and they have had an 8-2 defeat against Manchester United, but it does not matter. They still have excellent players," he said.
"Arteta has proved himself at Everton and Mertesacker is a German international.
"Of course they are going to start to pick up points, but hopefully not against us."
While Swansea picked up solid goalless draws at home to Wigan and Sunderland, they could easily have taken six points instead of two from those fixtures had they not been profligate in front of goal.
The south Wales club are still awaiting their first Premier League goal, but Agustien believes it is a matter of time before the duck is broken.
He said: "We are creating chances and that's the most important thing. If we were not creating chances then maybe it would be more of a problem."