Javier Hernandezâ€™s 11th-minute goal proved the difference in the 1-0 win, but it was the Redsâ€™ dogged display at the back which pleased the manager, as did the impressive performance by Carrick in the centre of the field.
â€śKeeping clean sheets has been an integral part of our success and we have been careless with our defending,â€ť he told MUTV.
â€śA few weeks ago there was genuine criticism about the defending and the chances opponents were getting. Swansea didnâ€™t really make any chances apart from the miss they had in the first half.
â€śIt was a solid performance and we never looked like losing the game. We were comfortable and had good possession. And when you win these games 1-0 it brings the concentration back to a good level which has been lacking. The concentration we showed today is exactly the concentration we need back in the team.
â€śWeâ€™ve tightened things up and there were some good performances by our defenders. And Michael Carrick was outstanding. I thought he did really well â€“ it was a big performance from him.
â€śTo get Michael back to that form and have the likes of Ryan [Giggs] available gives us good options. We also brought on Fabio, Fletcher and Valencia which shows you the strength of the squad â€“ they were good changes at important times in the game.
"The squad weâ€™ve got now is strong and I can make changes with confidence and thatâ€™s very important at this stage of the season.â€ť