Manchester United manager Sir Alex Ferguson has been given the go-ahead to strengthen his squad with a player of "very high quality".

Ferguson insists he is pleased with his additions - defender Chris Smalling and striker Javier Hernandez.

However Smalling has limited top-flight experience with Fulham while Hernandez has none at all after arriving from Guadalajara, and chief executive David Gill insists cash is available for Ferguson to enter the transfer market again before the window closes.

"The money is there if we believe there is a player who can improve what we believe is a very good squad," Gill told MUTV.

"The team has been together for a number of years and done very well. In order to improve it a player has to be of a very high quality.

"We are always looking at players. We are looking 365 days a year - it does not just start when the transfer window opens.

"Overall I think Sir Alex is very comfortable with the squad composition. That's not to say something won't happen, but I think it is a 'might', not a 'will'.

"We will see what happens over the next six weeks."

Hernandez is set to make his bow tomorrow against the MLS All-Stars at the Reliant Stadium after linking up with the squad.

He was given time off after the World Cup in South Africa, where he scored two goals for Mexico.