"I've talked before about there being a disconnect between the supporters and the team and I've felt that there's different ways to bridge that", Southgate said.
His wife, Natalie, is due on 30 June, two days after England play Belgium in their last group game in Kaliningrad.
Lingard is confident there will be no knock-on effect at the end of an arduous Premier League season, saying there is "definitely a freshness" about a young group blessed with the odd bit of experience and no little pace.
"Marcus Rashford took part in light training this afternoon and will hopefully rejoin the group tomorrow", England said on their official Twitter account along with a video of Rashford in action. "I think he's got a point".
"I said to all of the team before the game "I expect to see mistakes tonight and if I don't there'd probably be a problem because we won't be trying to be as good as we might".
On a more serious note, the Football Association is ready to sort flights whenever he gets the text from home.
Rashford had impressed during England's final warm up friendly against Costa Rica earlier this month, during which he scored only his third worldwide goal.
Southgate made some big calls when selecting his 23-man World Cup squad and he is trying to get his players to take more risks on the pitch. That's what I've found with this squad.
Theresa May's meaningful vote compromise rejected by rebel MPs
On Wednesday, the amendments will return again to the Commons, where May faces the possibility of defeat over a meaningful vote. A bus passes as anti-Brexit demonstrators protest opposite the Houses of Parliament in London, Britain, June 11, 2018.
"I've been speaking to the lads we've got at City, I spoke to Gareth often, so I've been well aware of what's been going on and what's been said in camp".
"Everyone's coming up to me asking me where I'm from".
"I've met many of them and lots have stories from tournaments going way back". "I think, with H, he's always been a captain - whether he had the armband or not".
Children are the main reason why none of Delph's friends or family will be in Russian Federation this summer, although the midfielder did say that "obviously there's concerns" about racism "because it's happened in the past".
"But he's a great guy, a good leader, and a very talented player".
England and Tunisia met at France '98 with England winning 2-0 thanks to goals from Alan Shearer and Paul Scholes.
Saturday's training session was kept behind closed doors as the players worked on specific tactical preparation for the match but midfielder Fabian Delph said they had been given the line-up.
"We've got to make sure they don't do too much physically, don't overload them with information".