Jonny Bairstow not certain to return as England wicketkeeper, warns Bayliss

• Head coach keeps options open after Bairstow’s finger injury
• James Vince returns to squad and provides coverJonny Bairstow has been offered no guarantees he will resume as England’s Test wicketkeeper once his broken finger has healed after the head coach, Trevor Bayliss, said Jos Buttler could now make a pitch for the job full-time.Bairstow sustained a hairline fracture to his left middle finger when struck in the field during the third day of the 203-run defeat at Tren