Tamoxifen is fine for Gyno, but Raloxifene is far better than any "gyno reversing" drug. You can dose Ralox at 60 mg daily until it's gone. Aromasin is a poor choice for gyno reversal.
There are no exercises that result in targeted fat loss. You need to reduce your overall BF% until it's proportionate.
Note that fat is often confused with Gyno. Verify you have gyno before you administer any treatment protocols. You would have an obvious lump.