Sanchez was convicted of tax fraud in Spain and accepted a 16-month suspended jail sentence in February.
Manchester United are hopeful David De Gea and Nemanja Matic will join up with the squad in the United States before glamour friendlies against AC Milan, Liverpool and Real Madrid, sources have told ESPN FC.
When discussing Alexis Sanchez not being on tour with visa issues he name-dropped Martial in his thinking.
Speaking last week, Hamilton said: "United is renowned for giving young players a chance to play in the first team if you are good enough, no matter what your age, and that's my dream".
"I'm not anxious about playing against Liverpool or Real or AC Milan [in the International Champions Cup], but I am anxious because I am not training with all my players". We think he can start training back in England, not ready for start of the season'.
'There is no one to blame - the club is making an effort.
"There is no [Romelu] Lukaku, [Marcus] Rashford or [Jesse] Lingard".
TWITTER Man Utd news Alexis Sanchez is flying out to meet the rest of his team-mates
United have brought in Diogo Dalot, Fred and veteran goalkeeper Lee Grant so far but fans had been hoping for at least one or two more signings. I have to respect the U.S. authorities in their process of selection of visas.
"It's not good for him and not good for me, or for the team".
"Now I look at it as a full preseason for me, and right now things are going really well".
Romero is still recovering from the injury which ruled him out of Argentina's World Cup squad. "It's unbelievable, fantastic. So many good players never had the chance to be a world champion".
After the five-game tour of the US and a friendly against Bayern Munich in Germany, United kick-off the new campaign against Leicester City at Old Trafford on August 9.More news: This Is the Galaxy Note 9's New S Pen