The 24-year-old's week-long stay at their Failand training ground will include the friendly against Forest Green Rovers, taking place behind closed doors, as he looks to impress manager Derek McInnes.
"At this stage we're just having a look at him," McInnes told the club's official website. "He comes highly recommended and we'll see how he gets on."
Feltscher, who has 11 caps for his country, is currently in his second spell with Grasshopper Club Zurich having previously played for Lecce and Bellinzona.































