The Premier League duo are reportedly keen on a move for the Argentine winger but face competition for his signature.
The towering Tunisian has been linked with the likes of Newcastle United and Aston Villa in recent weeks.
Rangers have completed some impressive signings this summer.
The former Liverpool striker has been pleased with the summer business at Anfield as players begin to find their feet.
Tottenham have been linked with a shock move for Liverpool's Fabio Borini.
Sunderland fans believe Watmore should now be starting for Dick Advocaat’s side.
The ex-Manchester City winger's three-goal haul helped Tim Sherwood's men seal a 5-3 victory over the League Two visitors in their Capital One Cup second-round tie.
Celtic host St. Johnstone at Parkhead this weekend
Everton are second favourites for the Queens Park Rangers striker, according to bookmakers.
The England under-21 defender played against Bury in the Capital One Cup last night.
Micah Richards could wear a Fiorentina shirt for the first time in a friendly against Swiss club Lugano, according to reports in Italy.
The latest Queens Park Rangers news, views and rumours.
Saphir Taider's loan spell from Inter to Southampton was called off within a month, but the player's agent insists it was down to personal reasons.