Lionel Messi was seen in discomfort last night in Inter Miami’s open training session at Chase Stadium. The Herons welcomed some 3,000 season-ticket holders to an open training session last night ahead of Inter Miami’s MLS clash against the Vancouver Whitecaps, where the Herons will want to extend their unbeaten run to ten games. With Messi missing last week’s midweek trip to Orlando City SC, the Argentine international is seemingly carrying a knock of sorts despite playing the entire match on Saturday against DC United, where the forward was again unable to make a goal contribution. And there…