Barca need to find a new striker signing this month after losing Luis Suarez until at least late April due to knee surgery.
Aubameyang, with less than 18 months to run on his contract, is a priority target for the Catalans.
And a Barca source told ESPN: "They really like him at Camp Nou.
"He is one of the most admired strikers in the club, but they know it will be difficult to get him from the Emirates Stadium."
It's also claimed Aubameyang would be willing to leave Arsenal to take up a big challenge in Spain.