They didn't show the replay well but it looked like Lowry was holding Middleton prior to the pass and disrupted Middleton's catch. But the replay was so bad that it was hard to see.
I thought the foul was going to be later in the play but there was no foul there. It looked like the replay guys were expecting the foul there and they were highlighting that part and moving quickly passsed the pre-pass part where the foul was ... or might have been because I am not 100% cause the replay showed it so badly.