But Pakistan captain Sarfaraz says his compatriots will not resort to such tactics.
"I think it (weather) might play a huge part in the next few days", Finch told reporters on Tuesday.
Stoinis gave in a decent performance with the ball against India as he bagged two wickets, dismissing MS Dhoni and Virat Kohli.
Despite struggling on a bilateral level, Pakistan reached the semifinals of the 2011 Cricket World Cup on the sub-continent and the quarterfinals four years ago in Australia.
Australia whitewashed Pakistan in a recent five-game ODI series in the United Arab Emirates, Finch topping the batting statistics with 451 runs at an average of 112.75. We're actually thinking about tomorrow's game. "So our morale is very high and we will do our best". Now, in the absence of a like-for-like allrounder in the squad, Australia will have to decide if they can do without Stoinis for the period it takes for him to recover.
Australia have summoned another all-rounder Mitchell Marsh as potential cover for Stoinis.
"I think Pakistan are obviously a very unsafe side", Finch said of Pakistan, who have only won one of their last 14 matches against Australia.
"Pakistan are a very risky side and we've seen consistently at ICC tournaments that they always get themselves in a position to win, regardless of their form".
The 1992 champions have looked characteristically unpredictable in the tournament as they began their campaign with a defeat by West Indies but bounced back in style shocking hosts England.
Rain is also forecast for the majority of the day, although there is some chance of it clearing to allow for the possibility of a shortened game.
"Firstly, we can't control the weather. But if the match is short, definitely the planning is a change one", he said.
