Joined in the hunt by the likes of AFC Wimbledon, Blackpool, Fleetwood Town, Ipswich Town, Lincoln City, Port Vale, Sunderland and Tranmere Rovers, the Saddlers are believed to be keen to secure several signings ahead of their return to pre-season training as the squad is due to travel to Poland for a few days of team building along with a clash against an as-yet unnamed team.
29-year-old Ball spent the vast majority of last season on-loan to the Saddlers' League One rivals Bradford City, where he bagged just seven goals in forty-two first-team outings as the Bantams ultimately suffered relegation to the fourth tier alongside Scunthorpe United, the Saddlers, and Plymouth Argyle.
Ball, a product of Manchester City's youth academy, turned professional in 2009 and, after a season in the club's reserve side, joined Swindon Town on loan where he would go on to make his professional debut in August 2010 as the Robins clashed with Brighton & Hove Albion.
After enjoying a successful six-month spell with Swindon, David was on the move once again as the Citizens had come to terms on a permanent deal with Peterborough United, the Posh paying £50,000 to land their man on the final day of the January Transfer Window.
David went on to make a total of forty-five appearances over the next year for the Posh, but eventually fell out of favour at London Road and ultimately joined Rochdale for the second-half of the 2011/12 season, where he would secure another fifteen first-team appearances.
Following a failed loan switch to Uwe Rosler's Brentford, which saw a potential deal collapse despite appearing all-but done, David signed for newly promoted League Two side Fleetwood Town on a three-year deal in August 2012 and would go on to bag forty-nine goals in two-hundred and nine appearances for the Trawlermen.
After five seasons at Town's Highbury Stadium David was on the move once again as he penned a two-year deal with Rotherham United where he would go on to bag a goal on his debut as the Millers faced Manchester City's Under-23s in the Checkatrade Trophy.
He would go on to grab another eight goals over the course of the 2017/18 campaign as the Millers ultimately secured promotion to the Championship. David made one Millers appearance at the start of last season before agreeing a season-long loan switch to Bradford City on Transfer Deadline Day.
The Whitefield-born attacker was named among a host of players to be leaving the New York Stadium at the end of the campaign, and is said to be on the Saddlers' transfer radar as Darrell Clarke has to both contend with potential departures and rebuild his side following last season's relegation.