One thing that Karanka will have picked up from Jose Mourinho is that your substitutions can change a game.
Whilst the XI picked to start the match will have a huge say in the result, if things are at a deadlock with only 20 minutes to go, or Boro need a goal to get back in it, Karanka will have to turn to his bench – and Kike will be one of the best options.
The Spaniard scored against Blackpool on Tuesday night and can be the spark to ignite play that leads to a goal – and Arsenal will be well aware of that.