The international break hasn't exactly been easy for Alexis Sanchez.On paper, the Chilean has scored two goals in as many games, but that's not taking into account his missed penalty in the 3-2 defeat to Costa Rica.Tuesday night saw another of his spot-kicks saved, this time against Honduras, but this time the Manchester United forward at least converted the rebound. Arturo Vidal had initially been on penalty duty but La Roja's all-time leading goalscorer stepped up for their second of the night, with the goalkeeper guessing the right way but then parrying the ball back out to Sanchez, who has scored just three from his last seven penalties excluding shootouts. The 29-year-old's reaction to his 42nd international goal said it all.Instead of celebrating wildly, he kicked the post in frustration before his team-mates made their way over.For one young fan, the emotion was all too much and he ran onto the field to meet his heroes.It's fair to say it wasn't the most gracious entrance:

However, before he was escorted away, there was time for Sanchez to put his arm around him.

It later emerged he had also invited the youngster into the dressing room at full-time, where he gave him his shirt and a pair of boots.

Sanchez's gesture for a fan 

The former Arsenal man posted the picture on Instagram with the caption:

"The innocence of children is one of the things most beautiful."

It was a really classy gesture and one the supporter will never forget.

Sanchez now has four days to prepare for United's home game against Crystal Palace.

Since his arrival in January, he has contributed just three league goals and has done little to justify earning the highest wages of any Premier League player.

And, as much as his heroics with the pitch invader have earned him plaudits, a lot of talk has also centred on yet another missed penalty - it's now a recurring problem.

Chilean newspaper La Tercera have pointed out his ongoing difficulties aren't just affecting him at Old Trafford, as he has been noticeably "silent" during training over the course of the break.

It's becoming very clear something is still not quite right.  

Will Sanchez ever get back to his best? Should he leave Utd? Have your say in the comments.