Per Mertesacker and Gabriel are both out for the next few months and their first game of the new league campaign against Liverpool highlighted once again the need for defensive reinforcements .
Liverpool ended in a 4 - 3 loss .
Per Mertesacker and Gabriel are both out for the next few months and their first game of the new league campaign against Liverpool , which ended in a 4 - 3 loss , highlighted once again the need for defensive reinforcements .