Srilanka XI vs ENG 1st T20
1.Danushka Gunathilaka
2.Oshada Fernando
3.Kusal Perera (c &wk)
4.Dhananjaya De Silva
5.Dasun Shanaka
6.Wanindu Hasaranga
7.Dhananjaya Lakshan
8.Binura Fernando
9.Lakshan Sandakan
10.Dushmantha Chameera
11.Nuwan Pradeep

If Avishka might open in 1st T20 Oshada will play in middle order at No.5.But Oshada is better when open the innings. Avishka had less average and strike rate in T20I but good player at No.3 in ODI.
Oshada reminds me of Mahela Jayawardene -Ashantha De Mel

Nooooo…Thisara’s captaincy record is very very poor in T20I.Srilanka haven’t won a single match under his captaincy among 9 t20i matches.So Gunathilaka is the one choice for the captaincy in T20I.

I think Mohammad shiraz and chamika karunaratne will not announce as replacement players by OfficialSlc but Dhammika is the best option.
Playing XI
1.Dimuth
2.Thirimanne
3.Chandimal
4.Kusal Mendis
5.Kusal Perera
6.Dhananjaya De Silva
7.Dickwella
8.Dilruwan
9.Lakmal
10.Rajitha /Dhammika(If available)
11.Vishwa Fernando /Mohammad Shiraz(If available)

Roshen Silva is the best player against spin bowling pitches but he is not playing well in the fast bowling pitches.

Top order is OK also Aviska place is ok but he need some experience to play at no.4.The best option is Mathews should play at no.4 and Kamindu at no.5 and Asela at no.6.Akila ok but We need wrist spinner so Jeevan Mendis is the best option.
ODI Squad for south africa series and WC 2019
1.Dickwella
2.Danushka
3.Kusal Perera
4.Mathews (Partnership maker,Long innings playing ability,Sanga told to cricinfo he said Mathews should play at no.4,Best finisher.He should promote to play at no.4)
5.Kamindu Mendis (He already played at no.5 with good average in U19 cricket )
6.Asela gunaratne
7.Thisara Perera
8.Jeevan Mendis
9.Udhana
10.Malinga
11.Lakmal

Bench players:
12.Dananjaya de silva(3rd opener)
13.Akila Dhananjaya
14.Chameera
15.Rajitha
16.Kusal Mendis