This is just the truth, international breaks means more games for footballers, and more games means less fitness and more chances of getting injured as well. When will the football governing council remember that footballers are not robots!
Also not only Walker, Bruno of Manchester United also was given permission to leave the Portugal squad and also instructed by Manchester united not to return for holiday yet, compulsory holiday to recou more energies haha
Arsenal forcing players to withdraw this round of friendlies seem like the best decision so far.
I think Arsenal have also made a fairly wise decision for all their players by making this cancellation, because they are quite aware that the next match in the Premier League will be against a fairly strong team. So you have to really maintain the fitness of the key players from now on as well as using the time to create new strategies so they can win at their opponent's home ground later. Because in the remainder of this season, with the level of competition being so fierce, it will be quite crucial for each team if their key players are injured due to the many matches they have played.