We've got to look at our best possible combination to do that," he said.
"I do think though that we've just come off a series where we've been Sri Lanka 3-0 - do those players get first opportunity? I don't know. That's something that we'll have sorted out by the end of today," he added.
He, however, said that seamer Moises Henriques has a better chance of being picked than off-spinning all-rounder Glenn Maxwell, who was the only million-dollar buy of this year's IPL players' auction.
Henriques made his case with a haul of 4 for 12 in the first of the two warm-up games.
"Moises has done everything right to possibly get a Test match here," Arthur said.
"We've chatted at length about it. We'll consider everything before we get the team out. But Moises has certainly done very well in these games.
"He's bowled exceptionally well I thought. The way he batted the other day was exactly as we want our batters to play. You've got to play with that intent here," he explained.
But Arthur said the dilemma over seam or spin is not entirely over as of now.
"We've got to look at what our best opportunity is to take 20 wickets. Maxie has worked extremely hard. I think Maxie has got a huge future. We have to weigh that up," he said.
"There's probably one all-rounder position in our team that's up for grabs. We've got to then determine is it the all-rounder that can give us reverse swing or is it the all-rounder that can give us a little bit of handy off-spin?" he wondered.