You have a chance, but there are some decent teams still left in it, not least Wolves. Then you have Inter Milan, Sevilla, Roma, Leverkusen, Shaktar Donetsk etc. If you had Maureen in charge I'd say you have a decent chance but with Ole and his tactical naivety, not so sure.
Not sure if United will be taking it as seriously now that they've made top 4. It's a good competition to win but I think most teams now view it as a route into the Champions League first and foremost, now they've already achieved that they could have one eye on next season. Especially wih the league starting so soon after the competition ends, they could view it as sort of a distraction.
They're certainly good enough to win it, but I think under the current circumstances the likes of Roma, Leverkusen and even Wolves could be more motivated to do so, having missed out on qualifying for the CL domestically