Manchester United boss Sir Alex Ferguson has concerns Javier Hernandez won't be ready for their trip to Tottenham.

The Mexican striker played in the USA this week against Colombia.

"Chicharito's match in Miami kicked off at 1am our time on Thursday morning so we'll have to see what he's like when he gets back," Ferguson told MUTV. "He's got another day [to recover] on Saturday which is good news but he will still have played four games in 10 days so it's quite a task for the lad.