Pierre-Emerick Aubameyang will have a medical at Barcelona after the club agreed a free-transfer signing from Arsenal.
Barcelona feared the move was dead earlier on transfer deadline day even though Aubameyang had flown to Spain.
The former Arsenal captain will sign a one-and-a-half-year deal at the Nou Camp and it will save the Gunners around £15m in wages.
The 32-year-old Gabon striker has not played for the Gunners since a disciplinary breach in December.
He has scored 92 goals in 163 games since a £56m arrival from Borussia Dortmund in 2018.