Putting a memorandum of understanding in place based on a few bids was 1% of the work. They reviewed concepts on the merit of need, feasibility and how it would fit into the OCP and yes, a scoring system that covered a range of other things. I'm not downplaying the level of preparedness but getting the rubber to hit the road so to speak is a whole different story. The bid and MOU would have barely scratched the surface on stuff like the lease agreement, roadway design, final impact assessments, shading models, built form, end of life, cost sharing, timing etc...
The list of things that City planners (in this case NCC planners) and risk assessment teams need to comb over, design and negotiate is lengthy and complicated on an average project. One can only imagine that this one is infinitely more clusterhumped with the NCC at the helm. Right off the bat some very complicated roadblocks could be that the plot of land was too small and that cost sharing/scope of work responsibilities haven't been negotiated including that on a massive decontamination effort, or that the NCC's timelines and ability to get work done need to align with those of the Sens.
This is an extremely complex partnership and I will be really surprised (pleasantly) if shovels are in the ground in a timely manner. Because of the tensions and delays I foresee, as well as the fact that the Sens won't own their arena, I hope to god that they decide to walk away and work with a more amenable and experienced partner, the City.