Lampard has come under fire after a poor campaign spell in the Premier League, despite a major summer recruiting drive.
The Blues have lost four of their last six top-flight appearances, although they ended that run with a Morecambe pounding in the FA Cup.
Despite this, Lampard still finds his job under threat, with a number of top managers available including Thomas Tuchel and Max Allegri.
And as Lampard struggles in his second year at the helm of the Blues, owner Roman Abramovich is looking to bolster his manager’s backstage staff.
Sky Sports reports that the Russian is looking to bring former Chelsea boss Grant back to Stamford Bridge, believing his experience could be “invaluable” for his manager under pressure.
Lampard played under Grant during the 65-year-old’s one-season reign in 2007/2008, as the Blues reached the League Cup and Champions League final, while also finishing second in the Premier League .
Grant was sacked by Abramovich at the end of that season, before leading Portsmouth relegated to the FA Cup final in 2010 and then taking over West Ham.
Although Grant has not been a coach since leaving Indian club NorthEast United in 2018, he is reportedly taking a position on Lampard’s coaching staff.
His arrival would be a worrying sign for Lampard, with Grant having been brought to the Blues by Abramovich in Jose Mourinho’s first term, replacing the Portuguese.
Grant potentially reassured Lampard in a recent Instagram video in which he helped the Chelsea boss turn things around.
“What I can tell Frank and the rest of the club is be patient,” Grant said.
“Two things: never lose it even when everything is going well, don’t lose your fighting spirit at the highest level.
“And second, don’t waste what you have here [points at head] – you have to think correctly and seek solutions. If you do this it will be fine because the quality is there. ”