The Blues would pay anything in terms of futures in order to grab Panarin with an extension. Without an extension, anything short of Thomas and Kyrou with multiple picks going the other way.
If it absolutely must be non-futures, the Blues can’t compete with a deal as Tarasenko, O’Reilly, Schwartz, Schenn, Parayko, and Pietrangelo would be off limits.
Artemi Panarin, unsigned
Klim Kostin
Ivan Barbashev
Dmitrij Jaskin
STL 2019 2nd
STL 2020 1st, conditional on Panarin re-signing
Or
Artemi Panarin, signed at 9M
Jordan Kyrou/Robby Fabbri
Klim Kostin
Dmitrij Jaskin
STL 2019 2nd
STL 2020 1st