Even if Jake did think about UFA, the thing is with guys going to their '1st round' of UFA is they are usually in their prime... that means they will want to be a de-facto 1st liner on a contender:
Likely ruled out due to having 1RW tied up that means Jake not a fit for one or the other:
Anaheim
Chicago
Washington
Pittsburgh
LA
Likely ruled out due to cap at that point (ie resigning their top players next year or 2018 a priority, or that they will not have ~9mill room by an stretch next year.):
Tampa
Minnesota
Vancouver
Detroit
San Jose
Montreal
Dallas
Ruled out due to internal budget:
Phoenix
Nashville
Florida
St. Louis
I mean... without thinking too hard that is over half the league that would very likely have a hard time being in on him without consciously trying to make space before FA even hit with no guarantee he would sign.
That would leave:
New Jersey
Rangers
Islanders
Sabres
Leafs
Jets
Blue Jackets
Hurricanes
Senators
Avalanche
Bruins
Oilers
Flames
Of those: Islanders, Sabres, Jets, Blue Jackets, Avalanche, Oilers and Flames seem to be teams who could be legit contenders in the not so distant future... but the Oilers and Sabres are not going to be playoff teams next year most likely, and the Avalanche and Blue Jackets will be cusp teams on paper.
That leaves the Isles, Jets and Flames who are teams that seem a decent fit financially and positionally, are already in the playoff hunt and will likely contend for sometime.
And on the Jets and Flames he likely does not have a player as good as Giroux to play with.
That is the reason most top guys at their first UFA period resign, they are already in a good position personally, know the team, mesh well, and there are never as many realistic fits as people imagine.
I mean, a lot can change in a year, but the likelihood is if Jake for some reason wanted to go to UFA there would probably not be that many more attractive landing places than Philly. And a minimal amount so much better you risk a move and hope you mesh. (as Chicago, Tampa, Anaheim would be.)