Mainoo 'brilliant' but Rashford 'can do better'

[Getty Images]Kobbie Mainoo has been the standout performer for Manchester United so far this season, says former Red Devils striker Fraizer Campbell.He told BBC Radio Manchester: "He's the only one who I think could say, 'look, I'm doing my bit here and I need you lot to help me out a little bit'."Meanwhile, Campbell also believes that Marcus Rashford deserves more patience - the 28-year-old has made six appearances so far this campaign but has recorded no goals or assists yet."I'm hearing a lo