2) Alex Oxlade-Chamberlain v Andrew Robertson
With the young Spaniard Hector Bellerin at right-back, Chamberlain will have to offer him plenty of defensive support. Robertson will get forward at any opportunity, and he is an absolutely lethal crosser.
The English international may also be able to force Robertson to retreat into his own half by putting pressure on the defence with his direct style of play, but he has to be fully aware of his defensive duties as well.