Arsenal star Mika Biereth has done well, but he's not a hero yet, warns Well boss

Motherwell boss Stuart Kettlewell was pleased with the impact that Mika Biereth made in their 2-1 win over Hibs – but has urged fans to calm down.

The 20-year-old Arsenal loanee replaced Theo Bair in 55 minutes with the score at 0-0, and set up an opener for Conor Wilkinson 11 minutes later, before bagging what proved to be the winner on his debut with five minutes left.

Hibs netted a penalty through Adam Le Fondre in stoppage time, but the Steelmen got their home Premiership campaign off to a flier.

Fans reckon they have a new superstar in their midst, but Kettlewell wants to keep people grounded, pointing out that the Dane isn’t yet ready to start a game.

He said: “I don’t want to be the damp squib, so to speak, but I just want to rein everybody’s expectation in.

“He’s a young player that came on and played 40 minutes or so on Sunday and he did really well, but I think we just settle on it.

“I think we just enjoy that it was a good performance that had a massive outcome and impact for us as a team.

“But there is loads and loads to go, I don’t think we start getting carried away, and I’ve always been like that.

“It doesn’t matter whether it’s one result or a string of results that we’ve had – I think we need to keep our powder dry and make sure that we continue to do the right things with the player to get him up to full speed, so that he’s available for 90 minutes of football, which he probably isn’t, just now.

“But what more can he do at that stage when he’s presented in front of the Motherwell fans; not a great deal.”

Kettlewell added: “Mika had a terrific impact, it was everything that you wanted from him coming on the park and more – but he’s missed a bit of football.

“He missed the game against Dundee because he