Dutch keeper Roos has signed a pre-contract with the Dons and can be part of from Derby County on a two-year deal.
The 30-year-old will turn into a free agent when his deal expires on the finish of this month.
Aberdeen boss Jim Goodwin is assured new signing Kelle Roos will convey robust competitors to Joe Lewis for the primary spot.
A product of the PSV Eindhoven academy, the previous Dutch youth worldwide made 91 appearances for Derby.
Goodwin feels stopper Lewis didn’t have sufficient competitors final season.
The Dons boss hailed Lewis as a “implausible keeper” however needed to signal a stopper throughout his summer time switch window rebuild to push him laborious.
The contract of No.2 keeper Gary Woods, who had a yr left on his deal, was terminated earlier this week.
Goodwin mentioned: “I don’t suppose we had ok competitors in that goalkeeper space final season.
“I feel we want that throughout the board in each place.
“Hopefully the supporters can see that with the standard of signings we’re bringing in.
“Joe Lewis is a implausible goalkeeper and has been an ideal servant to Aberdeen.
“He’s bought two years left on his contract however I would like somebody in there alongside Joe, each competing for that primary spot.”
Teenage keeper Tom Richie was in purpose for the second half of the 2-1 pleasant defeat of Buckie Thistle on Saturday.
In the meantime, Scotland worldwide defender Declan Gallagher is reportedly set to signal for St Mirren on a two yr deal.
Gallagher was not within the match day squad at Buckie Thistle however Goodwin confirmed that was as a result of he had picked up a knock in coaching.
