Calvert bruised his foot in training earlier this week and will need further assessment to see if he is fit to play a part at Borough Park.
The good news for Reds fans is that Andrews hopes to welcome back midfielder James Earl who missed last week due to injury.
Reds will be going out to do the treble over Warrington Town when their league rivals head to west Cumbria.
But Andrews has warned past results mean nothing once the whistle blows.
The two sides have already met twice this season, with Reds coming out on top both times.
Firstly Reds won 3-0 at home in the League Cup back in September and then followed it up with a 2-1 away win in the league.
But that will count for nothing tomorrow with Reds hoping to put last Saturday’s shock 4-0 defeat at the hands of Mickleover Sports behind them and climb back up the table.
“We can take confidence from those results but we can’t take anything for granted,” said Andrews.
“They haven’t changed their side much but they have been on a good run since Christmas.
“They were unbeaten this year until Tuesday night when Blyth turned them over so we won’t take them lightly.”
And he added that last weekend's defeat was now in the past for Workington.
“We will just take one game at a time. We spoke about last weekend briefly but it has gone now," he added.
“We need to concentrate on the game in front of us. We were disappointed but we can learn a lesson and move on.
“It was a bad day at the office but confidence is still high and we will keep plugging away.”
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here