UEFA are set to probe Manchester City's loan deal for Frank Lampard.
The Mail on Sunday says UEFA are expected to ask to see the full documentary details of Lampard's loan deal from City's sister club New York City.
The six-month arrangement was criticised last week by Arsenal manager Arsene Wenger as a potential means for avoiding UEFA's tough financial regulations, prompting City to respond by revealing that the Premier League club will be paying 100 per cent of Lampard's wages while he is on loan there.
