Acquired for a very low price earlier this season, the Big Z is at the end of a contract and will be hitting free agency, with full autonomy, on July 1st. Unless Allvin comes through and inks him to an extension before then. Given the way he's played since joining the Canucks, on top of his playoff performance, it's hard to imagine the Canucks as dominant without him on their line-up.
Frank Seravalli, the NHL insider, was on Canucks army earlier and addressed the Canucks situation in regards to their big number 91. According to his intel and his analysis of the situation, he believes that Zadorov is looking at a $36M deal over the next 6 years: