Big blow for Arsenal with £34m star substituted with suspected hamstring injury

Arsenal have suffered a major setback with Greek winger Christos Tzolis picking up a hamstring injury on Nations League duty against the Netherlands in Thessaloniki tonight.The 24-year-old has been a superb acquisition for the Gunners since his £34 million move from Club Brugge this summer, and he has already registered four assists across all competitions.Tzolis has also impressed for Greece in the Nations League with a goal against Serbia, but his availability is currently in serious dou