Miguel Herrera said Jonathan and Giovani dos Santos remain in doubt for the CONCACAF Gold Cup final against Jamaica on Sunday.
The brothers' availability remains in question, adding a selection headache to the suspension of Carlos Vela - although Herrera did confirm captain Andres Guardado should be fit, after reportedly pulling up sore following Mexico's controversial 2-1 extra-time win over Panama in the semi-finals.
Giovani has not appeared since being substituted at half-time of the 4-4 draw with Trinidad and Tobago in the group stages, while Jonathan has started in all five matches this tournament - including playing all 120 minutes against Panama.
Herrera said Saturday's training session would determine whether Villarreal midfielder Jonathan and LA Galaxy striker Giovani - who has been sidelined by a left abductor problem - would be ready for the final in Philadelphia.
"Physically the team is good, we have a couple of beaten, but fortunately [are] good," Herrera told a news conference.
"Jonathan and Giovani dos Santos, we will try this afternoon to see how they are both doing.
"Andres Guardado was much better yesterday, he had a heavy blow [against Panama], but fortunately it was [not too bad] and I think he'll be 100 per cent.
"The only doubts are the Dos Santos brothers, today's [training session] will prove if they are at 100 per cent, and then we'll think of them."
Midfielder Hector Herrera insisted Mexico had moved on from the semi-final drama, which has seen CONCACAF admit refereeing mistakes were made - ones the Mexicans capitalised on.
"Yes, it's a page that has already turned for the whole team. We are now engaged in the end, we are not interested in what has happened," the Porto midfielder said.
"We have a great opportunity to reach the Confederations Cup, and we want the whole squad, all the coaching staff [focused on] a nice opportunity to do so."
Centre-back Diego Reyes said Mexico will be wary of giving away free-kicks in dangerous positions against the Jamaicans.
"Jamaica is known for being a strong, fast team with good height. Its greatest virtue is the dead-ball," Reyes said.
"We have to be very careful in every corner; we have to work hard now. I am quite sure that the team will play a great match tomorrow."
