Nobody wants Hejda gone, and get a worse replacement. They want an asset for him at the deadline. And the hope is that you use that opening for a BETTER player. Hejda would be great to have next to Barrie next season. But they have all those turds already signed.
That is another problem with buying low on defenders. They have married themselves to bad, bottom pairing guys. So you can't sign another Redmond and hope he improves to be a top 4 guy. Or you can't sign those guys for 2-3 years. They are small salaries, but until we see them send one of those guys down we have to assume Cliche, Guenin, Redmond, Holden, Stuart will all be on the roster next season.
So in that thinking, we don't have room to add Hejda. But Aslan could be right. Maybe he comes back as a 2nd pair guy next season.