I think it's pretty simple - at the end of this season, the Wings entire left side will be made up on exactly... Jordan Oesterle and a massive glut of rookies with zero experience (Edvinsson, McIssac, Wallinder, Johansson, Sebrango, etc. etc.).
We know that not all out of LD Prospects are going to magically step into roles with the big club right out of training camp, so adding in a guy like Juolevi who is young (23), has upside (6th OA), plays a well-rounded, calm defensive game, and has some experience spread over the last few season....seems like a no brainer