Ottawa has some very good defencemen coming in Chabot, Wolanin, Jaros, Harpur, Englund & Lajoie & could probably afford to give up both Claesson & Wideman. However, if EK leaves than it doesn't hurt to have an experienced right shot as a backup & Wideman being a RD was the AHL defenceman of the yr one yr which might not mean much, but it shows he has the experience to run a PP & put up some pts at the least. Of course, a Chabot/Wideman pairing might be terrible & a Chabot/Ceci pairing might not be much better, I would be tempted to go out & sign Mike Green RD.
They might also draft a right shot D this draft but I doubt he would be NHL ready right out of the gate next yr. If Ottawa's defensive prospects pan out they could have a very good defensive corps someday but they are inexperienced now & it could take a few yrs before they play as a good solid set of three pair units in the NHL.