Manchester United boss Jose Mourinho is optimistic about his team's chances in the Premier League and Champions League this season but the Portuguese manager insists he does not feel under pressure to deliver atOld Trafford.Mourinho's first season at Old Trafford saw United finish sixth in the Premier League, though they won the Europa League and EFL Cup.With Romelu Lukaku, Nemanja Matic and Victor Lindelof now at United, Mourinho is relishing the season ahead, starting against West Ham on Sunday."The only thing I have to do is work every day like I always do, the only demand on me is the one I put on myself. "I don't put any extra pressure on myself because I always give everything, then normally the results are a good consequence of that work. My dedication to my job is always at the maximum, even more now than when I started, and I believe at the end of the season we will see the results."With these players I am looking forward to the season with optimism, with enthusiasm, I can't wait for the Champions League to start and the chance to play the top clubs. I am on fire." Mourinho said as quoted in OmnisportsUnited spent £75million to lure Lukaku from Everton, while Lindelof arrived in a deal worth around £30m.However, the signing of former Chelsea midfielder Matic has particularly pleased Mourinho.