Luke Weaver seems significantly more appealing to me than Reyes. A year older, but he throws a lot more strikes, while still posting K/9 ratios >10.
The rest of their system is awful though. Flaherty is fine, but I'd hate to build the trade around 2 pitchers. Harry Bader and O'Neill strike out way too much and we don't need another catcher in Carson Kelly.
Weaver, Gyorko + Wong for JD?