Tite's Brazil squad is loaded with talent but he is agonizing over who to start in central defence and central midfield to complement his attacking depth. Football can be fascinating even when it is dull. The first half of Brazil's World Cup warm-up friendly against Croatia is a case in point. Brazil ended up winning 2-0, but they were shaded in a first half that will surely leave coach Tite with much to ponder. It is seldom wise to attach too much importance to the results of warm-up friendlies. Germany, after all, have just been beaten by Austria. But looking beyond the result, there is plenty to observe about the way that the team functions…