Javier Hernandez's family know the Mexican striker needs a big World Cup so to hit the ground running at Manchester United.
Journalist Tom Marshall works for the English language newspaper, the Guadalajara Reporter, in Mexico, and admits Hernandez's move from Chivas to United has been the transfer story "of the century".
Marshall told the Manchester Evening News: "He hasn't been playing well recently for Mexico. In the last four matches against poor teams he hasn't scored.
"Last weekend, he missed a couple of sitters against a much weakened Chile side. He admits he's not done well. His problem is that he is trying too hard. Possibly he is trying to justify all the headlines and hype about moving to Manchester United.
"His granddad was a member of the legendary Chivas side in the 50s and was in Mexico's World Cup squad in 1954. He was on TV advising Chicharito to relax.
"But he also added how important the World Cup in South Africa is for him. He says he needs the springboard of a good World Cup before he moves to United.
"He reckons it is vital for his grandson. If he performs well in South Africa then he'll go to England high on confidence ready to tackle his United career. If he has a poor World Cup, then he'd go over to England on a downer.
"The press in Mexico are not going that overboard about it, so they are not putting too much pressure on him. He has to learn to cope with it himself and take his granddad's advice."