Bjeli backed out of the Philly deal because it was only a one year deal...he agreed to come to the Kings instead of back to Europe because it was a three year deal with good playing time. I doubt he regrets it since it’s likely he will see the deal to the end and will continue to get good playing time.
He probably would’ve been done with Philly after one season(Assuming he’s wasn’t packaged to bring in Butler) and signed another one year contract with a different team this past season. At that point, possibly three different teams in two years likely with the same sporadic role he had in Minny, he’s branded as a journeyman part time role player. That is exactly what he wanted to avoid. He has established the type of player he is with the Kings and his next contract will likely be a muti year elsewhere.