I don't agree, they'll pay the guy in the end. I know news is slow in the summer, but look at it this way.
The Habs had a long post-season, and didn't stop playing hockey until May 30th.
The Entry Draft was June 27-28.
Teams could start talking to other team's UFAs on June 25th during the interview period
Free Agency began July 1, and Bergevin was very active.
So in the span of 5 weeks, Montreal had to close out their season, do media availabilities, finalize their entry draft plans, have discussions with other teams on trades in advance and during the draft, sign free agents. It's a busy time, and PK probably wasn't the priority. With an arbitration date looming, he is now.