With U.S. stock futures trading mixed this morning on Wednesday, some of the stocks that may grab investor focus today are as follows: Wall Street expects Manchester United Plc. (NYSE:MANU) to report a quarterly loss at 27 cents per share on revenue of $162.92 million before the opening bell, according to data from Benzinga Pro. Manchester United shares gained 1.6% to $16.19 in the after-hours trading session. Kura Sushi USA (NASDAQ:KRUS) …