Jonas Gutierrez is chasing a new deal with Newcastle United.
The 31-year-old made his first appearance for the club in 17 months on Wednesday having twice beaten testicular cancer.
Gutierrez enjoyed a spine-tingling welcome from 50,000 fans inside St James' Park as he came off the bench during the second half of Newcastle's 1-0 defeat by Manchester United.
"I am living day by day," he said. "All I can do is work hard in training and work as hard as I can. I'm going to fight for my place - I always try to do that.
"I'm recovering, I'm healthy and I'm feeling strong - now I have to wait for my opportunity and fight for that.
"I have three months to do my best and we'll see what happens. This is football, you are going to get opportunities so you have to be ready for that."