If a widener was used on the master try turning it off, it could also be a mid side eq thing but overall it's a tad on the wide side. For the rest a general janitor clean up will help out. Bit of sidechaining on the drums in the drop so that the drop hits a little harder. For the vocals bit of sidechaining to the melody group (frequency sidechaining in mono) just to make the vocals a little more upfront like the drop. That's about it :)