Tough question. From what I understand about Pete, he values younger players because they are more reliable/healthy than guys that have been banged around for years.
If I had to choose, Graham is a top 3? TE. Okung I would guess as about average when considering missed games and penalties. It is easier to replace a TE, but finding top tier talent is the hard part. If both can play in game 1 of next year, I go for the top tier talent (TE) and hope to coach up a youngster at LT.
Now, if our QB was either Manning, or Brady as examples, I might take the LT because they have no mobility nor escape ability.
As far as age goes Graham is older, as for injuries Graham has had some pretty major ones. Read this article about Graham as a saint.
Jimmy Graham's shoulder injury hurting Saints' O
Jimmy Graham is coming off one of the worst performances of his career, dropping a career-high three passes and failing to reel in two more that were broken up as they hit his hands last week.
Although Graham hasn't been the same since his early October right shoulder sprain, coach Sean Payton is not allowing any excuses on the heels of the New Orleans Saints' embarrassing loss to the Carolina Panthers.
The Saints have been tight-lipped about the particulars of Graham's injury, but there are signs that it is more serious than originally reported.
The All-Pro tight end is no stranger to lingering injuries. His consistency has taken a severe blow due to a 2012 season-long wrist injury, a 2013 torn plantar fascia and the current shoulder sprain
Now he has a torn patellar tendon, an injury that athletes have had a tough time coming back from. You sure Graham would be your choice over Okung?