This is not a full pattern, but just the grid.
You can use it for whatever you would like.

For the same sweater I made you will start with 5 cm of ribbing and then start the grid.
Then make a back panel in the same dimensions and 2 sleeves. There is no shaping in this sweater what so ever so you can go wild and do your own thing!

If you prefer working with stitch fiddle: https://www.stitchfiddle.com/en/c/sjn5mf-fy509u