According to MB he didn't shop Subban so we don't really know. It was David Poile coming up to MB before the draft and floating the name Shea Weber that had MB going into a stall of the men's washroom and pumping his fists furiously before asking Geoffrey if it was okay to trade the fan favorite.
I'm not sure about that because apparently Chia pet in Edm said he couldn't afford to take on Subbans contract with the thought of having to sign Mcdavid and Draisitl to big deals sooner than later.