McDonald has dubbed Carroll their 'marquee signing'.
â€œItâ€™s obviously their [Liverpoolâ€™s] loss and our gain," McDonald told talkSPORT.
"They want to play out from the back and play through midfield and try to score the perfect goal whereas we have got a really good mixture. We can go long, we can play into our forwards, who can hold it up and get it wide, and we have got people who can cross the ball.
"When you put the ball in the danger area that gives people chances and we are just hoping Andy can get on to a lot of them chances in the box and score more goals than he did last year.
"We are trying to sign good players to push the club on. We finished tenth last year, which was great, and we want to try and improve on that. We can only do that by signing class players and Andy Carroll is a class player."