I think this topology works: [![enter image description here][1]][1] I beveled these edges and rearranged a bit all around: [![enter image description here][2]][2] Here is what it gives with the *Subdivision Surface* modifier: [![enter image description here][3]][3] [1]: https://i.sstatic.net/C9haO.jpg [2]: https://i.sstatic.net/Wl3eR.jpg [3]: https://i.sstatic.net/C2oXv.jpg