Varnish was famously the only member of the British track team that rode at London 2012 not to medal after being disqualified from the team sprint with Victoria Pendleton.
However with Pendleton, who won gold and silver at London 2012, now retired there are spots vacant in the individual sprint and keirin as well as the team sprint alongside Varnish.
The new international track season is set to begin in earnest with the first of three World Cups in Columbia on Thursday before the European Championships take place in Lithuania a week later.
Seven Brits will compete across the two with Varnish, Becky James and Kian Emadi chosen for the World Cup and Victoria Williamson, Callum Skinner, Lewis Oliva and Matt Crampton for the Europeans.
Varnish isn't a certainty to ride the individual sprint and keirin in Pendleton's absence with James winning both those plus the team sprint and 500m time trial at the recent British Championships that she didn't attend.
Nonetheless, having concentrated on just the team sprint for nearly three years and it ultimately counting for nothing at the Olympics, Dyer knows Varnish is desperate to branch out.
"Jess had nothing else but a standing lap to think about for the last two and a half years so I'm sure she'll be relishing the opportunity to have a crack at sprint and keirin," said Dyer.
"Although she has done that in the past it's been off standing lap training. It's very early days for Jess immediately after the Olympics.
"I'm sure that's what she'll be thinking about and the standing lap will be less of a focus for her in the next couple of years.
"I'm sure Becky will be looking forward to getting up in the team sprint as well and staking her claim but it's really early days yet.
"Becky had an amazing British Championships. She won everything she entered and really dominated the women's sprint programme.
"So it's a really good start by her and a nice range finder ahead of serious international competition. I'm sure she'll feel in a pretty confident mood about where she is at right now."