While Microsoft had the lion's share of Call of Duty marketing deals and exclusive timed content during the Xbox 360 era, the situation managed to flip and now Sony works closely with the franchise on PlayStation 4 and PlayStation 5.
If the Call of Duty franchise was to become exclusive to Microsoft platforms, then it makes sense that Sony would have to approach the second biggest first-person shooter franchise, BattlefieldIt’s worth noting that Microsoft has had marketing deals for the Battlefield franchise in the past too, including Battlefield V