The Blues probably don't want to take any defensemen back in a trade, especially ones with long-term contracts. Guys like Alex Pietrangelo, Jonas Junland, and Ian Cole are going to be fighting for spots over the next couple of seasons. Erik Johnson and Roman Polak are almost surely going to be Blues for the foreseeable future. Eric Brewer and Barret Jackman are also signed through next season. The Blues might also try to re-sign Colaiacovo if the price is right. It's a pretty crowded situation.
Also, I think the Blues want to hold on to Berglund and see how he progresses rather than give him up when he's struggling.
taking on salary is yeah a negative, but the blues do have the cap room.
The third and fourth posts in the thread make it clear: the value isn't there and it's not a fit. The Blues have a lot of money wrapped up in veteran defense, and they have plenty of defense overall, they're just waiting for them to grow into impact players. They're looking for snipers and big, scoring forwards. That's Berglund. And despite Berglund's struggles, 1. his stock hasn't dropped at all, and 2. it's a downgrade because they're not in a position to win now.
They have their work cut out for them to make the playoffs this year and this deal doesn't help. So if you're looking at next year and beyond, how does this help? They're getting Kariya and Tkachuk off the books. Yea, they have to re-sign some RFAs, but they'll have a little money to toss around to get the guy they want. This deal is just not how they'll want to spend their money.
lots of info here as to why this proposal isn't workable.
the blues needing salary to sign their upcoming younger players probably being the main point.
hopefully Berglund works out for the blues then. saw him struggling this year, didn't know what to think of it.