Manchester United's contract talks with Bruno Fernandes are stumbling for two significant reason.

The Red Devils are eager to tie down the Portuguese to a long-term deal on a significantly higher salary, following his outstanding displays since signing from Sporting CP.

Respected journalist Fabrizio Romano has reported that two issues are in deliberation, even though both parties have a real willingness to find an agreement.

Salary is one issue, with Fernandes one of the lower paid "star players" at United.

Another problem is the length of the contract.

Given Fernandes is 27, United may not want to offer him a big money deal on significant wages that lasts until he is 32 or 33.