Manchester City boss Pep Guardiola said his Ballon d'Or winner Rodri is a doubt for Sunday's trip to Arsenal due to fitness concerns in what is sure to be a blockbuster clash. City will arrive in North London on a wave of momentum after back-to-back wins over Manchester United and Napoli, but Rodri came off after an hour against the Serie A leaders in Thursday's Champions League match, raising concerns about his fitness. Guardiola said the Spain midfielder will be assessed ahead of Sunday's game when asked if he would play. "I don't know yet, but he was so smart (to request a substitution against Napoli on Thursday). We'll see, day-by-day," Guardiola added. "The training (on Wednesday), he didn't feel...