I hope you see the flaw in your rhetoric saying Johnson or whoever would never waive their NTC to leave the sunny cup contender Tampa but Sergachev will gladly go to Winnipeg the minute he gets an offer when he's going fishing and boating and partying and working out beachside with his good pals Kuch and Vasi while playing for said sunny cup contender.
Tampa has a track record of RFAs taking a conservative bridge deal after the team has freed up cap room accordingly. The one recent offer sheet to one of our RFAs that went public was to Point, who declined in heartbeat praising the Lightning org, the team, the city and its community. Tampa also has a track record of players taking less compared to market value in order to stay (Hedman, Stamkos, Kucherov - to name just the big fishes). Every season people like you proclaim that we'll lose a big name player or an up and rising youngster due to our cap situation and the Lightning have always made it work. They even added more pieces later in each season to further improve the team. I know it makes for good drama and all but you're probably going to get disappointed.
The list of GMs willing to put up an OS big enough to maybe entice Serg or Cirelli is short, even more so after COVID-19. It's not really well received among the league, success rates aren't exactly high, the price on the other hand is really high and in the end it all depends on the sought after player to actually agree. And whether that happens is even more unpredictable: On himself, his partner, his family, their friends and relationship to teammates, the organization, the city and its community, their hobbies, properties, affilition and preferences (wheather, life style...)...
I get that the situation is tricky. To make it work for Serg, Cirelli, (Cernak) a lot of pieces have to be moved around, agreements with other players and teams have to be reached and I wouldn't want to switch places with Brisebois for sure. But I'm confident our management will explore all options, do their best and in the end we'll have one, likely two, maybe even all three of them on the team again next season. At what cost we will find out soon enough.