I seriously doubt they could move up from 20 to the top.
If he slips, bad workouts, gets hurt at combine that kind of thing then absolutely could think of them making a move but it's not happening to get to the top.
The only possibility is if someone high up believes in Foles, and thinks he's a better bet than a rookie and could extend him now before he's proven etc. That seems unlikely.
The Eagles have a pretty good situation. They need long term replacements for the o-line, and Ryans but next year they are pretty good to go for starters for the the oline, WR (assuming Maclin stays), RB front 7 for the d (bar one outside linebacker). They need a QB and 3 secondary pieces. But they have cap space. IF they think they can fill the QB issue with some move then they could.
Everything I see from Kelly suggests draft wise anything is possible. He likes who he likes and we could see some Belichick draft picks, a WHO? or REACH?! But he hasn't got the track record to shrug and ignore it yet.
BTW the latest nugget is that Kelly wanted Jordan Matthews in the 1st and Roseman persuaded him to wait for the second. Which doesn't suggest Kelly was screaming for MArcus Smith II (good) but again shows he might not get the value side. That said the kid has been great so... if he had been a late first round pick would anyone have argued? Now anyway.