It wasn't a signing, it was actually a trade. David Perron from the St. Louis to Edmonton for Magnus Paajarvi and a 2014 second-round draft pick. Not very shocking, the Oilers have been shopping Paajarvi for 2 years and they finally found something they liked.
Yeah just re-read it, so my bad on that. Not much else to say unless its a crazy signing/trade fest. Which it probably won't be.