I commented on this in August and twice again in October. Jones did play well in preseason, but so did Bradford. In the meantime Jones has missed some time with an injury.
Basically if Bradford was out, (for whatever reason), Sundell would be the obvious choice and Jones would be the next best option. Failing that i'd look for a FA, and as a 4th resort i'd go with Cabeldue. I'm not a believer in Haynes.
All that said preseason games are like photographic snapshots of who does what. Management gets to see who performs best on a daily basis and if they pick Haynes...well, it's their choice. Occasionally coaches are fooled by how players behave in meetings or the way they talk and thus they can get it spectacularly wrong. Most of the time they make better decisions than fans do.