"Dogshit"? Really?
They were finishing top 4 MOST years, with occasional 6th or 7th and the only 8th in 2011-2012. Not to mention that they came close to winning the league in that time AND actually won Champions League in 2005. They never fell as low as we did last year.
As to motivations of players joining us, I think them believing in us having a "project" is the least of it. So far the players that are coming to us are either
1. Childhood fans of United who have a dream to be part of our revival, despite all factual evidence against it
2. Skyrocketing their compensation compared to what they were making before
3. Coming to us because we were still the biggest club going for them, or the only club from EPL going for them. Some of these also hoped to get more game-time with us than with other options. Kinda worked-out for Yoro, not so much for Heaven.
Regarding Elliot Anderson... He looks great and we should sign him if we can get him for reasonable price ($50-$60M). Anything more than that is a huge gamble. He is playing very well, but so was Baleba. Anderson has not, yet, shown multi-season high performances to demand fees like 70, 80, 90+ million quids.