Red Wings GM Ken Holland and Filppula's agent Bill Zito have had ongoing dialogue with respect to the 29-year-old, but so far the two sides have not been able to come to terms on a new contract.
According to a source close to the organization, concepts have been exchanged, but it's unclear if any formal offers have been made from either side.
If the two sides cannot come to terms on a new deal, though, it's believed the Red Wings will trade Filppula's rights.
Holland and Zito are expected to speak again in the near future, and could connect at some point later today.
In 41 games with the Red Wings this past season, Filppula registered nine goals and eight assists for 17 points.
Filppula has played in seven full seasons with the Red Wings, spanning 483 regular-season games, and has accumulated 100 goals and 151 assists for 251 points.
He was originally drafted by Detroit in the third-round (95th overall) of the 2002 NHL Entry Draft.