THIS has been something of an unsatisfactory summer for the reputation of footballers and their commitment to their contracts. A string of major players have made themselves the proverbial “pain in the arse” in order to push for a transfer, mostly when they are in mid-contract. The most recent example appears to be David Luiz, who moved from Chelsea to Arsenal in the closing minutes of the transfer window. This was an eyebrow-raising move, chiefly because nobody expected it and also because Arsenal were taking another 30-plus player off London rivals, a couple of years after signing another veteran in Petr Cech. Luiz, who never comes across as an awkward individual and seems to have a decent attitude, apparently agitated for a transfer to…