Turkey coach Vincenzo Montella heads into the decisive Group F clash with the Czech Republic on Wednesday with a furore back home about the fitness of young star Arda Güler still raging. The 19-year-old only came on as a substitute in the 3-0 defeat by Portugal in the second group game but appears available to face the Czechs, with Turkey needing a point to go through to the last 16. “He couldn’t play from the first to the last minute against Portugal. It wasn’t my decision, it was the doctors’ decision,” the Italian told a news conference in Hamburg on Tuesday. “If he doesn’t play now, it’s b…