Tottenham will want to hold on to their star striker over the summer.
The Black Cats' survival is still not guaranteed, despite Allardyce having taken over in October.
The former Gunners goalkeeper, who was part of the 'Invincibles' title winning side in 2003-04, says his former side have "thrown away" the title.
The 31-year-old Argentine has struggled to gain regular first-team football this season.
Championship leaders Middlesbrough are also interested in the 23-year-old.
Newcastle United to due to take on Manchester City later this evening.
The Scottish Championship side came out on top when the pair met in the Scottish Cup semi-final.
Leeds United's Lewis Cook was named as the Football League’s Young Player of the Year earlier this week.
Jimmy Floyd Hasselbaink looking to create a clear identity at Queens Park Rangers.
Newcastle United face Manchester City at St James' Park tonight.
Lewis Hamilton did not drive a car here on Thursday but still managed to show everyone why he is the winner of three world championships, with more likely to come.
Sadiq Khan, the Labour candidate for London mayor, has said there is “a question to be asked” about why some Muslim women in the capital wear hijabs and niqabs.