Looking at the stats of the top 3 UFA LHD over the last 5 seasons (thank you, Grok):
*Attempt to summarize..
1) Chychrun is the only one with injury history...and Chychrun/Provorov are workhorses.
2) Chychrun is the best offensively, followed closely by Provorov.
3) Pettersson is the best defensively...Chychrun/Provorov about equally bad.
4) Not a huge difference between the 3 in terms of physicality...but it goes Chychrun-1, Pettersson-2, Provorov-3.
.....
Jakub Chychrun:
26
6'2, 215
304 games (79%)...........Last
24:36 avg TOI..........1st
175 pts (0.58 per/g)..........1st
-67 (-13.4 per/season)...........Last
452 hits (1.49 per/g)..........1st
Marcus Pettersson:
28
6'3, 200
371 games (96%)..........1st
20:45 avg TOI...........Last
99 pts (0.27 per/g)..........Last
+53 (+10.6 per/season)..........1st
490 hits (1.32 per/g)...........2nd
Ivan Provorov:
27
6-1, 201
368 games (96%)..........1st
24:46 avg TOI..........1st
169 pts (0.5 per/g)..........2nd
-51 (-10.2 per/season)...........2nd
466 hits (1.27 per/g)...........Last
.....
You want ASP with a sound defensive partner, so you basically have two options...
Edvinsson---Seider
Pettersson---ASP
or
Chychrun/Provorov---Seider
Edvinsson---ASP
.....
Assuming we could get any of the 3 (stupid assumption)...
I would take Provorov > Chychrun bc of the injury history.
Not sure if I would take Provorov > Pettersson. But I suspect Yzerman would prefer the better defender.