Cruzeiro midfielder Everton Ribeiro has told ESPN Brasil that he would fit into the Manchester United side.
Portsmouth have named Richie Barker as their new manager and Steve Coppell as director of football.
Rob Hall has extended his loan stay with Birmingham by a further month.
The West Ham winger will now remain at St Andrew's until at least Saturday February 16, although his parent club do have the option of a recall clause.
Hall joined Blues in November and has been an instant hit with both manager Lee Clark and the club's fans.
The England Under-19 international has made a total of eight appearances to date.