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Jamie Carragher is never backwards in coming forwards when it comes to getting under the skin of Manchester United fans on Twitter.

The announcement that United have agreed a deal with Bayern Munich for the signing of Bastian Schweinsteiger has been met with understandable optimism from Red Devils supporters.

A player who has won it all with his club and his country, who will slot into a position which United, by their own admission, needed to strengthen.

However, where there is optimism, there is Carragher to plummet them back down to earth.

The Liverpool legend asserted that the 30-year-old midfielder is 'past his best' and that he 'couldn't he happier' about the signing, and the rumoured departure of David De Gea to Real Madrid.

As if that wasn't enough, he rubbed salt into the wound by saying United fans 'don't understand tactics'. Endearing himself even more to the Old Trafford faithful.

United confirmed earlier this afternoon that a deal had been struck with Bayern, and that a move would be completed on the agreement of personal terms and the completion of a medical.

A short club statement read: "Manchester United is delighted to announce it has reached agreement with Bayern Munich to sign midfielder Bastian Schweinsteiger, subject to a medical and personal terms."

It came just moments after Bayern Munich chief executive Karl-Heinz Rummenigge confirmed the move was on the cards.

"Bastian wants to do something new at the end of his career," said Rummenigge. "He asked that we meet his wishes.

"My colleagues at Manchester United have been in touch. We've reached an agreement over a transfer.

"It's regrettable because Bastian meant a great deal to the club. He achieved great things."

Follow all the latest on the Schweinsteiger deal, and all the latest, breaking transfer news in our live blog, here.

poll loading Who would win in a fight? 5000+ VOTES SO FAR Jamie Carragher Bastian Schweinsteiger