The phrase "goal mouth" refers to the area in front of a goal in sports like soccer, hockey, or lacrosse where you try to score by getting the ball or puck past the goalie and into the net. Full definition
Finally, I am expecting the to be plenty of goal mouth action in this, and history suggests that will be the case. (arsenalfcblog.com)
This season, the system means that we have 3 players closer to goal mouth while last season we have 4 players in there. (justarsenal.com)
It will take something special from Arsenal for some of us fans to recover from the utter embarrassment against Man U (Without 14 first team players)... and I'm not referring to a 90 +5 mins goals mouth scramble Arsenal 1 — 0 Swansea. (justarsenal.com)