The Croatia international's future has been the subject of much debate, as he has been strongly linked with both Manchester United and Chelsea.
But it seems it is Jose Mourinho who has won the race for his signature, according to Spanish newspaper Marca.
Olsson is due to have talks with the Baggies over his future following Sweden's elimination from Euro 2012 earlier this week.
Finally, Inside Futbol reports that negotiations between Ajax and Tottenham Hotspur over defender Jan Vertonghen are deadlocked.
image: © Vladimir Maiorov