New manager Roberto Martinez has signed striker Arouna Kone and centre-back Antolin Alcaraz from Wigan Athletic, goalkeeper Joel Robles from Atletico Madrid (via a Wigan loan) and Gerard Deulofeu on loan from Barcelona and that quartet has midfielder Osman excited.
"We've brought four new signings in already and it's been impressive," he told the club's official website.
"There's been a momentum with us so far. Now we're all together and have got the rest of our international lads back, we've got our full squad and we can start to look forward even more.
"It's about how quickly now we can all understand what the new manager wants and how he wants us to play. That's different from being comfortable on the ball. We need to be comfortable in the mind as well.
"As far as being comfortable and composed on the ball goes we've certainly got players capable of being that. That's a positive."