Plaintiff 2 (=pl2) was the contractor for major renovations of the defendant’s (=def) home; plaintiff 1 (=pl1) was the supervisor. The contract stated that pl2 would finish the job in 120 work days within approximately six months. After over eight months, with the job not close to complete, def fired them, with the claim that pl2 was working only sporadically because he took on another job. Pl2 claims that he took the other job only after def fell behind in payments and that he had already worked 140 days because def made additions to the original plans. Pl2 claims that def fired them when she received a bill for the additional work. Def says that she wrote a letter to fire them before she received that bill, that she paid less than spelled out because she bought some of the materials that pl2 was required to, and because the work was behind schedule. She claims that pl1 approved the amount she paid and that pl2 did not protest.
A long-time rebbe at Yeshiva A left his job and now teaches at Yeshiva B, which caters to a similar population. May he approach Yeshiva A alumni, with whom he developed a relationship at Yeshiva A for assistance (money, ideas) in promoting his work at Yeshiva B? May he raise money for an NPO he formed personally? Do note that the rebbe had been unwilling to raise money for Yeshiva A when he worked for them. (The question is not intended to be used in deciding a dispute between the sides.)