Rodrigo celebrates scoring what proved to be Spain's victor against England at Wembley.
"At the moment we are not able to do that when teams are pressing us high".
"We need to asses over the weekend, but I think it's likely we'll need to call some players in", Southgate said. England's World Cup feel-good factor also has faded.
An injury to Shaw at the start of the second half led to a lengthy delay, with the Manchester United fullback withdrawn on a stretcher following a heavy collision with Carvajal, to be replaced by Danny Rose. "These are the teams we want to play against".
Spain's easy-on-the-eye style began to pick holes in England as the likes of Isco, Alcantara and Saul Niguez began to pin back the hosts.More news: Atlanta Falcons falter once again against the Philadelphia Eagles
But Press Association Sport understands the 23-year-old is conscious and will undergo further tests at Wembley. "We won't take any chances with his health". There is no way I believe we will ever be a top team if we do that.
But the game was overshadowed by a horrific injury to England's left-back, Luke Shaw. Shaw, whose fine pass set up Rashford's goal, received treatment for several minutes on the field before being taken off apparently wearing an oxygen mask.
Spain, who bowed out in the World Cup last-16 after a torrid campaign, nevertheless showed the benefits of a long-established identity and a level of creativity sorely lacking in England's midfield.
Despite a late rally and controversially disallowed Danny Welbeck goal, Gareth Southgate's side were unable to register their first Nations League points. "Before I left, the missus said, "Oh, you are back off on your boys" holiday again.' And that is what it kind of feels like".
"A certain part of the press has tried to divide us because we are two people with a lot of character".
"We knew it was going to be a hard game".