Tarnstrom returns to the Oilers following a year away in the Swiss League. He played in Edmonton in 2006 and was part of the team that lost to Carolina in the Stanley Cup final.
Grebeshkov, meanwhile, was a restricted free agent. He was acquired by Edmonton from the New York Islanders for Marc-Andre Bergeron in February.
The Vancouver Canucks are 2-1-0 under new coach Rick Tocchet after Friday's win, but Ilya Mikheyev is now done for the season to rehab an ACL injury.
The New Jersey Devils are enjoying a breakout season, but they'd benefit from another strong winger. Adam Proteau analyzes a possible trade for Timo Meier.
Who knows where Pierre-Luc Dubois will be in a year or two? But two years after the trade to the Winnipeg Jets, he's on pace for a career high in points.
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