In just seven Premier League outings this season, Grealish has managed to net four and provide six assists.
"If you have every other Premier League manager the chance to pick him then they would pick him as well because if you see day-to-day what he gives to the team as an individual then he's a top talent, so definitely I think the criticism is very harsh". Jack Grealish played out to Sancho, who cut in from the left before firing a low shot through Ireland midfielder Jeff Hendrick's legs to beat goalkeeper Darren Randolph down low to his left.
"I was very pleased with the way the boys played. I couldn't speak highly enough of his performance", Southgate said.
"I witness it here when I train [with England] and I have witnessed it as a kid, so I know what his mentality is like and how hard-working and driven he is". He took the ball in tight areas, his technique was good, we knew he would buy a lot of free-kicks. "I thought at times both of them did that really well". I explained to him what we wanted to see when we brought him in in September.
England will be without injured striker Marcus Rashford and defender Conor Coady, who is self-isolating as a precaution, for their Nations League matches against Belgium on Sunday and Iceland three days later.
Reflecting on defeat, Southgate said: "We don't like losing, but enormous credit to the team, all the way through they created problems and defended resiliently".
"If you play at the level we did tonight, I think we will win more games than we lose".