Zellweger will be an NHL regular by October
This is my belief as well. As long as Fowler is here, next season it's Fowler, Mintyukov, and Zellweger on the left. Vaakanainen and LaCombe either have to play RD, will be the extra defenseman, or will be traded. I just can't see the keeping Zellweger down. They need the offense and he's showing he's ready.
Side note, if the Ducks keep Fowler for the duration of his contract, LaCombe seems like the odd man out as Vaakanainen is better suited as a 6/7.