Players, in my opinion.
Ole put out an attacking team. We dominated possession and go into some good areas. That's when you need your big players to step up and create moments of magic, especially in games such as this, where teams play with a low block.
Often, the wrong decision was made in the final third or we were too slow in moving the ball. That, and it was an absolute sin to concede the way in which we did.
Of course people will talk about subs and how Ole could have potentially bought players on earlier but put yourself in Ole's shoes. He has started with his strongest front four, who, even though they can be poor at times, can produce moments of magic. He looks to his bench, and no disrespect but he seems James, young Amad, VdB, who has done nothing of note this season and an aging Mata. These were our attacking options. Therefore, whilst people agree with him or not, I can see why Ole wanted to wait it out a bit, just to see if that front four could produce something, which they so often have done this season.
Unfortunately, it wasn't to be, and in the end, Ole has obviously put on the penalty takers, who, to be fair to them, didn't let him down. Felt all the pens were fantastic, but we just lacked that cutting edge in normal time.