Why Anderson? I doubt they will take a chance on trading their supposed #1 goalie who has proven he can at the least play a lot of games & play well. Lehner has shown glimpses of playing well & glimpses of playing terrible, he has barely established himself as a backup in the NHL. I doubt they depend on him if Hammond ever falls back to earth, granted he is younger & suppose to be the future but he may never pan out as well. I don't see a Lehner & Hammond tandem at all but you never know.
Check how many players have contracts for next season, all of the RFAs will likely be extended & there is the potential of re-signing Condra. I count about 16 forwards, 8 defencemen not counting Wideman or Claesson who so many want to see in Ottawa & 3 goalies. They need to move 3 or 4 players in a package to make room & I doubt any of the guys most here want to move will be in those packages. Phillips, Legwand & Neil IMO are trade deadline rentals, I'd be surprised if any of them retire or are moved this summer or before the deadline next season. If they don't send a player or two to Bingo they will have too many players & the roster limit is 23. It should be interesting how they get themselves out of this situation & what there budget will be for next season.
IMO it is really simple why Andy.
Should the Sens' brain trust believe Hammond is the real deal and are willing to offer him a one way contract, then there is no need for Andy at $4.7M as a backup.
Lehner is 23 year old with potential costing $2M, perfect for a back up role for another year or two.
IMO the only reason anyone would want to sign Hammond to a one-way deal, yet keep Anderson and trade Lehner, is because they aren't convinced Hammond is as good as his 12 game run and want to hedge their bets.
This thinking may work on HFB but not in real life with real money involved.
Should Hammond continue to play like he has until season's end, then BM and company are faced with an extremely difficult decision.
Re your view of what the Sens' must do in the off-season, I'm not sure it as clear cut as you seem to think.
Whenever the path forward seems unclear, refer to what the owner has said is his strategic direction.
Melnyk has been clear, draft well, then spend on development to enable continuous long term success.
So with what looks like too many bodies, the draft and develop mantra clearly indicates the players at risk of trade aren't likely the youth.
Of course for every rule there is an exception, for example Chaisson might be expendable if Robinson is ready, but in general this team will favour youth over regressing veterans.
I fully expect BM to do whatever is necessary to move the redundant pieces and add another player or two from Bingo.
As for Legwand, Phillips and Neil, they won't be trade deadline moves, something will happen long before then IMO.