Ashley Williams hopes to prevent ex-Swansea team-mate Scott Sinclair adding to his Aston Villa goal tally when the sides meet in the Premier League on Saturday.
Sinclair has scored three times in the last five games for Villa.
That has seen Tim Sherwood's side rise above the relegation zone and reach the FA Cup semi-finals.
"Hopefully we will shut him down," said Swans captain Williams of the player who left for Manchester City in 2012.
"He has looked good in the games he has played for them, taken his goals well and that will give him a lot of confidence.
"He is a confidence player and you could see once he got among the goals here there was no stopping him."
Sinclair scored 36 goals in 91 games for the Swans as they reached the top flight in May 2011.
But he started only twice for Manchester City in 19 appearances after a £6.2m move and failed to score.
Sinclair joined Villa on loan in January this year.
Williams added: "We will always be grateful for everything he did because he was an important player at this club.
"He was a popular man and we loved having him down here and it is good to see him getting himself back on track.
"But I won't be too bothered about him doing that until after the weekend."
Williams says Sinclair's return to form is down to Sherwood, who has overseen three successive wins in league and cup.
Villa have beaten West Brom and Sunderland in recent weeks to move three points above the relegation zone.
"Players like Scott need to be loved," Williams said. "The new manager [Sherwood] has gone in there and he [Sinclair] looks to be enjoying the challenge.
"He seems to have found a place where it is starting to come together for him after a couple of years that have maybe not quite gone as he would have hoped.
"He is quick, has good movement and we will have to watch him because those of us who played with him know exactly what he can do, given the chance."
Swansea hope to recover from defeats against against Tottenham Hotspur and Liverpool.
"We have not got anything out of our last two games and we don't want it to become three in a row," Williams said.