Manchester United manager David Moyes admits it has been a baptism of fire at Old Trafford Everton are a great club and I was proud to manage them. I can't deny Manchester United is on another level. Let's be honest, it would be a step up from just about any club in the world. The level of interest from the fans and the press is phenomenal. Despite the suffocating pressure that comes with such a high-profile position, Moyes is loving the challenge. "I cannot wait to get the season started," Moyes added. I know what it's like to step out at Old Trafford as the manager of the opposition, so to step out in front of 75,000 fans as the Manchester United manager will be special for me. I know it won't always be easy, but I just hope we can all work together. My sole goal is to be successful and have a winning team. I hope that over the years we can have plenty of success. Moyes has won just two out of his six pre-season games so far, but he is aiming to secure his first trophy as United manager in the Community Shield against FA Cup winners Wigan Athletic on Sunday as a tribute to the man he has replaced. Of course I will be trying to make the Community Shield the first trophy of many, but if we win it's really something that will have been earned by Sir Alex. It's because of his good work in the Premier League last season that we're in the Community Shield. I'll do my best to finish off the job, but it's Sir Alex who will deserve a lot of the credit if we're successful. Roberto Martinez, meanwhile, is determined to ensure Marouane Fellaini will remain at Everton despite intensifying interest from United. The Belgian midfielder is wanted by Moyes and would welcome a move to Old Trafford. With a clause allowing him to move for £23.5 million expiring at the start of this month, Everton can demand a sizeable fee to try to retain the 25 year-old. Moyes, who signed Fellaini for £15 million from Standard Liege in 2008, remains keen to buy him once again after failing to lure Fabregas from Barcelona. United are yet to make a bid but the Belgian's advisers are aware of their interest and are ready to strike a deal with the season fast approaching. Martinez though remains positive on his chances of trying to get Fellaini, and long-standing United target Leighton Baines, to remain at Goodison Park. "I said from day one, as a manager you only concentrate on day to day and working hard," Martinez said. I don't mind players grabbing headlines. That means they've been doing well and are outstanding performers. Whatever happens on the headlines in the media is something from this time of the season, unfortunately, but it's not going to take my mind off the work that we need to do. I know that Marouane and Leighton Baines have been working very hard for the team. And that is all that matters. The headlines always come about at this time of the season. It won't take my mind off the work we have to do and I am not bothered at all. There has been no bid. Fellaini struggled with the intense Miami humidity along with the rest of his Everton team-mates after they lost 1-0 to Valencia in Miami on Tuesday night in the final game of their American tour. Martinez returns to Merseyside ready to continue his preparations with a match against Real Betis on Sunday pleased with the progress made on tour following a penalty win over Juventus which was preceded with a narrow defeat to Real Madrid. He added: "The pre-season is a very important time to set the season ahead and I think we've been really fortunate to work in three different environments. We went to Austria and put in a lot of work. Then back to Everton and now here, we've been able to get a lot of information from all the players. This is when you have to see the partnerships and how players interact with each other. We had the opportunity to play against the best back three in the world, in the name of Juventus, in the first game. Then we played against maybe the best counter-attacking football in Real Madrid and then we played against a very well structured and organised team who know how to keep the ball, so it was a very good test. On top of that you have the humidity of Miami, which was very tough from a physical point of view.