The Rockies will probably trade, or should trade, for a few things before the trade deadline. It could be starting pitching, bullpen help, catching, or perhaps a second baseman (which is most unlikely of the four because the Rockies have plenty of top prospects that can play second but I mention it because DJ LeMahieu can’t stay healthy this season).
However, one of those is not need to acquire is a corner outfielder. Even at first glance, Gerardo Parra and Carlos Gonzalez, who have been the team’s primary corner outfielders, have not played badly this year and, in fact, have been much better this year than last year, especially in the case of Gonzalez.