Sunderland manager Steve Bruce is confident that Paraguay international Cristian Riveros will finally team up with the rest of the Black Cats squad later this week.
The 27-year-old, who started all five of his country's games at the recent World Cup, is still waiting for international clearance before the transfer can be finalised.
Bruce told the Sunderland Echo: "We're still looking for Riveros to come through the door. We don't know where his passport is - somewhere between Paraguay and New York.
"But we expect him to be here on Wednesday or Thursday. It's not a hitch - it's a delay that we probably expected because we had a similar experience when we brought Paulo Da Silva over last summer.
"They need to get their passport stamped and visa changed and with having the World Cup in the middle of it didn't help - especially with them getting to the quarter-final.
"If they'd got knocked out in the early rounds it would have helped!"
Riveros started his career with his hometown club Colon and also played for San Lorenzo and Tacuary before being transferred to Libertad and then Cruz Arul.