Gillingham’s Jayden Clarke feels the competition for places will help improve his own performances. The 23-year-old winger made his first league start of the season in the 1-0 victory at Morecambe last Saturday, crossing for George Lapslie to tap home the winner. But with good options on the bench, players to come back from injury and the returning Bradley Dack working to get up to match fitness, Clarke knows he needs to impress when he gets his chance. “Everyone knows that now,” said Clarke. “Your shirt is always up for grabs when you’re in the team. When you’re not in the team you’ve always …