Juan Mata seals deal with Manchester United could make debut against Cardiff in midweek Juan Mata could feature against Cardiff City this week. JUAN Mata completed his record $A71 million transfer from Chelsea to Manchester United after completing a medical at the English champions. United had already confirmed late last week that they had agreed a deal to sign the 25-year-old for a club-record fee. Today is a very happy day... It's a massive club and I feel very proud to be here," said Mata. I am thrilled to be joining. United is the perfect place for me. "It's a real pleasure to have secured his signature," said Moyes. The deal eclipsed the $A59m that United paid Tottenham Hotspur in 2008 to sign Bulgarian striker Dimitar Berbatov. Mata is expected to go straight into the squad for United's home game against Cardiff City in the EPL on Wednesday (EDT). His signing reflects Moyes's eagerness to arrest a startling decline in United's fortunes since he succeeded fellow-Scot Alex Ferguson as manager at the end of last season. United striker Robin van Persie welcomed Mata's arrival, writing on Twitter: "Welcome Juan Mata see you all tuesday." Centre-back Rio Ferdinand tweeted: "Welcome to my amigo juanmata10 ! Mata will join countryman David de Gea at Old Trafford and the United goalkeeper gave his fellow Spaniard a playful welcome, tweeting: "Welcome to my brother juanmata10 just one thing....Not the best clothes!"