Need an American poster to enlighten us.
Short answer: No, I don't think he could contribute anything meaningful to the team right now
Long answer: The USMNT, and more specifically the press who reports on them, is dreadfully guilty of overhyping our youngsters. We did it with Freddy Adu and we did it with Jozy Altidore, and we're trying to do it again with Juan Agudelo. They show some promise before they turn 18, get a call-up to the senior side because we have no options in attack outside of Donovan and Dempsey, and do well in a cameo. They move from the US, experience what is likely a sort of culture shock, and are dreadful for several years. Adu may finally be finding his feet again back in the US (now that he's likely more mature at 23), while Altidore's settled and found a good bit of form at Alkmaar (and is also now 23). Even though Agudelo's got 16 caps, he isn't ready for the Premier League. He's got the size (6'1"), though he hasn't struck me as the paciest of players--though he isn't slow, either. He's got a better work rate on the occasions I've seen him than Altidore did at the same age, but he has much less in terms of finished product. Agudelo struggled this season following his trade from New York to Chivas, suggesting perhaps he may have issues settling in a new environment, or he's going through a lull after so much senior football (and the accompanying hype) at such a young age.
Celtic may be his level, or it may not. If he were to come to Everton, I'd support him like I do any of our players, but I don't think he'd do much for at least a couple of years. I'd put him behind Vellios in terms of current ability at the Premier League level. In my opinion, he'd be another Anichebe--frustrating for several years before finally starting to unlock his potential (or so we hope with Victor). He could probably do decently well at Celtic, as they're quite obviously the best team in their league and could bring him along with very little pressure to perform; particularly if they lose Hooper in this window, they'd have a striker gap to plug.
We're challenging for a European spot. While another striker would be nice, I don't think Agudelo is that striker. Altidore could very well be, but he's well out of our price range.