The midfielder once again impressed even in a losing effort as Frank’s side fell to a 3-0 defeat away at Manchester United on Monday evening.
Eriksen has had a transformative impact since signing for the club on a free transfer in January, scoring once and registering two assists in eight Premier League games thus far.
Even away from such metrics, the lift he has given the team have largely helped them stave off the relegation fears that crept in at the turn of the year.
Out of contract in the summer, former club Tottenham have been linked with an emotional move for the Danish international.
Speaking after the defeat at Old Trafford, Frank said: “We played a Manchester United team who played well today, so congratulations to them.
“I think we started well for the first five minutes but then Manchester United were on top. Second half I saw much more my team I want to see play. We were back in the game but made a stupid penalty. It took a little bit out of everything and then we conceded on a set piece. Better second half.
“We were in the game [at 1-0]. We had opportunities and we were equally in the game, which was good.
“Eriksen is again a very important player for us. The key is he performs consistently at a high level. It is no secret we would like to do everything we can to keep him.
“I don’t think it was a 3-0 defeat in terms of chances. I think it was a fair loss. We have had a very good season in many ways. We win or learn and today we learned a lot.”