Only saw the highlights but I think people are being harsh on Osula
First chance - quick break, by the time he has support he's in a position to shoot but gets tackled.
Second chance - break from half way, he's forced out wide and has the option to shoot or try and find the man at the back post. Shoots but shot pushed away for a corner.
Third chance - ball played in to him, first time effort keeper saves. Had time to make the keeper work harder.
Fourth chance - intercepts the ball and runs 60 yards (no other United player with him) shoots wide as he is pressured.