"They can play with the freedom with which they play local cricket," Hathurusingha said ahead of the first ODI of the series, which is not part of the ODI Super League. "We have seen what they can do in local tournaments, which is how we picked them. Their performance and ability to bat a certain way, their records against pace and spin... we are giving them the mental confidence so that they can do it in the international level. We are looking at who has that character to do the role in the international level.

"Regardless of winning or losing, I look at different things like character, how they handle situations in the middle, who stands up under pressure. Performance can go up and down. [Jos] Buttler is the best batter in the world in white-ball cricket, [but] we really put him under pressure [in the T20Is]. We were very happy with our attitude, body language and fielding. Even if we lost both series, if I see those things, I know that going forward, we are in the right direction."

Bangladesh's next ODI series, also against Ireland, is part of the Super League, and they are also scheduled to play ODI series against Afghanistan and New Zealand, apart from the Asia Cup, before the World Cup in India in October-November.

Is Mahmudullah in the mix for the ODI World Cup?

He has been rested, Hathurusingha pointed out, and didn't want to be drawn into a discussion about Mahmudullah's future.

"I don't think he is past his prime," Hathurusingha said. "We are trying to expand our pool of players before the World Cup. In case something happens close to the World Cup, we want to have enough players that we have seen and can trust to do a role. We are rushed to do that as we have only 15 matches before the World Cup. We are trying to give opportunities to players we think can do the role. [Mahmudullah] Riyad is still in the mix.

"Riyad has done enough. He has a lot of experience. We know what he can bring. We want some other players to get up to the mark at the international level. Not just skill-wise. It is about seeing whether they have the character to do the (role) at this level. It doesn't mean that if that guy perform well, Mahmudullah is finished. He is still in our plans."

Hathurusingha expected the fast bowlers, who were so influential against England recently, to get some assistance in Sylhet, where the three Ireland ODIs would be played.

"It looks like a good wicket to bat on," Hathurusingha said. "There's enough for the fast bowlers and spinners here too. I always rate our spinners. They are very tactically savvy and skillful. But this time my fast bowlers have come in leaps and bounds. I am very happy with that as well."

Taskin and Mustafizur will have their workloads managed

"The way [Mahmud] handled the pressure overs in the three ODIs was very impressive," Hathurusingha said. "He opened the game for us in the second T20I by getting Buttler out. If I look at the game within the game, it allowed us to bring [Mehidy Hasan] Miraz into the game. The wicket brought all their left-handers. If Buttler was still there, it would have been a different kind of a game in the end.

"The games within the game are very important. I am looking for people to stand up and do things. They get confidence out of doing these things regularly. Team get confident about their role and trust them to do things. Fizz's [Mustafizur Rahman's] two big overs changed the momentum in the third T20I."

"We want to manage him [Taskin], one of our strike bowlers. He is a world-class bowler. He bowled as quick as anyone in that series," Hathurusingha said. "We want to manage him and Fizz. There's a lot of cricket coming up. It will also allow us to give more game time to the other fast bowlers as well.

"We are trying to expand our bowling unit. Taijul [Islam] is our No. 1 Test bowler. He bowled really well in the ODIs against England. We know he is ready. We wanted to give Nasum a go, to see how he goes. If he also does well, we have two guys ready leading up to the World Cup."