Swansea chairman Huw Jenkins has admitted Wilfried Bony could leave the Liberty Stadium if the 'right offer' is made.
Manchester City striker Edin Dzeko has confirmed that he is in talks about signing a new deal at the Etihad.
Jozy Altidore will arrive in England on Monday to complete his move to Sunderland.
Press Association Sport understands the 23-year-old striker is due to fly in to undergo a medical having agreed personal terms.
The Black Cats agreed a deal with Dutch club AZ Alkmaar for the United States international over the weekend and are keen to push the transfer through as quickly as possible.
Altidore will become the latest man to join new manager Paolo Di Canio's revolution as he overhauls the squad he inherited from predecessor Martin O'Neill.
The Black Cats unveiled Bosman free signings Valentin Roberge, Cabral and Modibo Diakite last week having also added youngsters Duncan Watmore and David Moberg Karlsson to the mix, and the Italian has a series of other targets in his sights.
However, the striking department is a priority with Scotland international Steven Fletcher having to carry much of the burden last season before injury struck, and Di Canio will hope the American is the man to provide the support.
January signing Danny Graham has unable to date been unable to contribute on the goals front, while Connor Wickham and Ji Dong-won have struggled to make an impression and Stephane Sessegnon's future remains uncertain.